Official campaign portrait, 1944
Presidency of Franklin D. Roosevelt March 4, 1933 – April 12, 1945
Cabinet	See list
Party	Democratic
Seat	White House
Third term January 20, 1941 – January 20, 1945
Vice President	Henry A. Wallace
Election	1940
← 1st & 2nd terms
Fourth term January 20, 1945 – April 12, 1945
Vice President	Harry S. Truman
Election	1944
Harry S. Truman →
Seal of the president (1894–1945)
Library website

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The third presidential term ofFranklin D. Roosevelt began on January 20, 1941, when he wasonce again inaugurated as the32nd president of the United States, and the fourth term of his presidency ended with his death on April 12, 1945. Roosevelt won a third term by defeatingRepublican nomineeWendell Willkie in the1940 presidential election. He remains the only president to serve for more than two terms. Unlikehis first two terms, Roosevelt's third and fourth terms were dominated by foreign policy concerns, as the United States became involved inWorld War II in December 1941.

Roosevelt won congressional approval of theLend-Lease program, which was designed to aid theUnited Kingdom in its war againstNazi Germany, while the U.S. remained officially neutral. AfterGermany began war against the Soviet Union in June 1941, Roosevelt extended Lend-Lease to theSoviet Union as well. In Asia, Roosevelt provided aid to theRepublic of China, which was resisting an invasion by theEmpire of Japan. In response to the July 1941Japanese occupation of French Indochina, Roosevelt expanded a trade embargo to cut off oil that Japan urgently needed for its fleet. When Roosevelt refused to end the embargo, on December 7, 1941, Japan launched anattack on the U.S. fleet stationed at Pearl Harbor in Hawaii. Isolationist sentiment in the U.S. immediately collapsed and Congressdeclared war on Japan. After Germany declared war on the U.S., Congress declared war on it and Italy. To win the war, the U.S., Britain and the Soviet Union assembled a large coalition of theAllies. The U.S. funded much of the war efforts of the other allies, and supplied munitions, food, and oil. In consultation with his Army and Navy and British Prime MinisterWinston Churchill, Roosevelt decided on aEurope first strategy, which focused on defeating Germany before Japan. In practice, however, in 1942 and 1943 the U.S. focused on fighting Japan.

In late 1942, the U.S. began its ground campaign against Germany with an invasion of North Africa. The German and Italian forces surrendered in May 1943, opening the way for the invasions of Sicily and Italy. Meanwhile, the U.S. Navy won a decisive victory over Japan in the Battle of Midway and began a campaign ofisland hopping in the Pacific. In 1943, the Allies launched aninvasion of Italy and continued to pursue the island hopping strategy. The top Allied leaders met at theTehran Conference in 1943, where they began to discuss post-war plans. Among the concepts discussed was theUnited Nations, an intergovernmental organization championed by Roosevelt that would replace theLeague of Nations after the war. In 1944, the Allies launched asuccessful invasion of northern France and the US Navy won a decisive naval victory over Japan in theBattle of Leyte Gulf. By the time of Roosevelt's death in April 1945, the Allies had occupied portions of Germany and the US was in the process ofcapturingOkinawa. Germany and Japan surrendered in May–August 1945 during the administration of Roosevelt's successorHarry S. Truman, who previously served as Roosevelt's vice president.

Though foreign affairs dominated Roosevelt's third and fourth terms, important developments also took place on the home front. The military buildup spurred economic growth, and unemployment fell precipitously. The United States excelled at war production; in 1944, it produced more military aircraft than the combined output of Germany, Japan, Britain, and the Soviet Union. The United States also established theManhattan Project to produce the world's firstnuclear weapons. As in Roosevelt's second term, theconservative coalition prevented Roosevelt from passing major domestic legislation, though it did increase taxes to help pay for the war. Congress also passed theG.I. Bill, which provided several benefits to World War II veterans. Roosevelt avoided imposing heavy-handed censorship or harsh crackdowns on war-time dissent, but his administration relocated andinterned approximately 120,000 Japanese Americans. Roosevelt also prohibited religious and racial discrimination in the defense industry and established theFair Employment Practice Committee, the first national program designed to prevent employment discrimination. Scholars, historians, and the public typically rank Roosevelt alongsideAbraham Lincoln andGeorge Washington as one of the threegreatest U.S. presidents.

The two-term tradition had been an unwritten rule (until the ratification of the22nd Amendment after Roosevelt's presidency) sinceGeorge Washington declined to run for a third term in 1796. BothUlysses S. Grant andTheodore Roosevelt were attacked for trying to obtain a third non-consecutive term. Roosevelt systematically undercut prominent Democrats who were angling for the nomination, including Vice PresidentJohn Nance Garner^[1] and two cabinet members, Secretary of StateCordell Hull and Postmaster GeneralJames Farley. Roosevelt moved the convention to Chicago where he had strong support from the city machine, which controlled the auditorium sound system. At the convention the opposition was poorly organized, but Farley had packed the galleries. Roosevelt sent a message saying that he would not run unless he was drafted, and that the delegates were free to vote for anyone. The delegates were stunned; then the loudspeaker screamed "We want Roosevelt... The world wants Roosevelt!" The delegates went wild and he was nominated by 946 to 147 on the first ballot. The tactic employed by Roosevelt was not entirely successful, as his goal had been to be drafted by acclamation.^[2] At Roosevelt's request, the convention nominated Secretary of Agriculture Henry Wallace for vice president. Democratic party leaders disliked Wallace, a former Republican who strongly supported the New Deal, but were unable to prevent his nomination.^[3]

World War II shook up the Republican field, possibly preventing the nomination of isolationist congressional leaders like Taft or Vandenberg. The1940 Republican National Convention instead nominatedWendell Willkie, who had never held public office. A well-known corporate attorney and executive, Willkie rose to public notice through his criticism of the New Deal and his clashes with the TVA. Unlike his isolationist rivals for the Republican nomination, Willkie favored Britain in the war, and he was backed by internationalist Republicans likeHenry Luce the publisher of influential magazines likeTIME. Willkie's internationalist views initially prevented disputes over foreign policy from dominating the campaign, helping to allow for the Destroyers for Bases Agreement and the establishment of a peacetime draft.^[4]

FDR was in a fighting mood, as he called out to an enthusiastic audience in Brooklyn:

I am only fighting for a free America – for a country in which all men and women have equal rights to liberty and justice. I'm fighting against the revival of government by special privilege....I am fighting, as I always have fought, for the rights of the little man as well as the big man....I'm fighting to keep this nation prosperous and at peace. I'm fighting to keep our people out of foreign wars, and to keep foreign conceptions of government out of our own United States. I'm fighting for these great and good causes.^[5]

As the campaign drew to a close, Willkie warned that Roosevelt's re-election would lead to the deployment of American soldiers abroad. In response, Roosevelt promised that, "Your boys are not going to be sent into any foreign wars."^[6] Roosevelt won the1940 election with 55% of the popular vote and almost 85% of the electoral vote (449 to 82).^[7] Willkie won ten states: strongly Republican states of Vermont and Maine, and eight isolationist states in the Midwest.^[8] The Democrats retained their congressional majorities, but the conservative coalition largely controlled domestic legislation and remained "leery of presidential extensions of executive power through social programs."^[9]

Roosevelt's standard strategy was to give two different people the same role, expecting controversy would result. He wanted the agencies' heads to bring the controversy to him and he would make the decision.^[10] Roosevelt on August 21, 1942, explicitly wrote all of his department heads that disagreements: "should not be publicly aired, but are to be submitted to me by the appropriate heads of the conflicting agencies." Anyone going public had to resign.^[11] By far the most famous controversy came during the war when Secretary of CommerceJesse H. Jones and Vice PresidentHenry A. Wallace clashed publicly over who would purchase war supplies in Latin America. Congress gave the authority to theReconstruction Finance Corporation controlled by Jones; Roosevelt gave the power to Wallace, who envisioned creating a sort of little New Deal for poorly paid South American workers. According toJames MacGregor Burns, Jones, a leader of Southern conservative Democrats, was, "taciturn, shrewd, practical, cautious.” Wallace, deeply distrusted by Democratic party leaders, was the, "hero of the Lib Labs, dreamy, utopian, even mystical yet, yet with his own bent for management and power." On July 15, 1943, days after they escalated their private controversy to Congress and the public, Roosevelt stripped both of their roles in the matter.^[12]

As World War II approached, Roosevelt brought in a new cohort of top leaders, including conservative Republicans to top Pentagon roles.Frank Knox, the 1936 Republican vice presidential nominee, becameSecretary of the Navy while former Secretary of StateHenry L. Stimson becameSecretary of War. Roosevelt began convening a "war cabinet" consisting of Hull, Stimson, Knox,Chief of Naval OperationsHarold Rainsford Stark, andArmy Chief of StaffGeorge Marshall.^[13] In 1942 Roosevelt set up a new military command structure with AdmiralErnest J. King (Stark's successor) as in complete control of the Navy and Marines. Marshall was in charge of the Army and nominally led the Air Force, which in practice was nearly independent and was commanded by GeneralHap Arnold. Roosevelt formed a new body, theJoint Chiefs of Staff, which made the final decisions on American military strategy.^[14] The Joint Chiefs was a White House agency and was chaired by his old friend AdmiralWilliam D. Leahy. The Joint Chiefs worked closely with their British counterparts and formed theCombined Chiefs of Staff.^[15][16] Unlike Stalin, Churchill and Hitler, Roosevelt rarely overrode his military advisors. His civilian appointees handled the draft and procurement of men and equipment, but no civilians – not even the secretaries of War or Navy, had a voice in strategy. Roosevelt avoided the State Department and conducted high level diplomacy through his aides, especiallyHarry Hopkins. Since Hopkins also controlled $40 billion in Lend-Lease funds given to the Allies, they paid attention to him.^[17] Treasury SecretaryHenry Morgenthau Jr. played an increasingly central role in foreign policy, especially regarding China.^[18]

Due to the retirements of Chief JusticeCharles Evans Hughes and Associate JusticeJames Clark McReynolds, Roosevelt filled three Supreme Court vacancies in 1941. He elevatedHarlan F. Stone, a Republican appointed to the Court by Coolidge, to chief justice and then appointed two Democrats. SenatorJames F. Byrnes of South Carolina and Attorney GeneralRobert H. Jackson became associate justices. The combination of the liberal Jackson, centrist Stone, and conservative Byrnes helped ensure the Senate confirmation of all three justices. Byrnes disliked serving on the Court, and he resigned to take a top position in the Roosevelt administration in 1942.^[19] Roosevelt nominatedWiley Rutledge to replace him on the court. Rutledge a liberal federal appellate judge who would serve on the Supreme Court for just seven years.^[20] By the end of 1941, Roosevelt had appointed Stone,Hugo Black,Stanley Forman Reed,Felix Frankfurter,William O. Douglas,Frank Murphy, Byrnes, Jackson, and Rutledge, makingOwen Roberts the lone Supreme Court justice whom Roosevelt had not appointed to the Court or elevated to Chief Justice.^[21] Roosevelt's appointees upheld his policies,^[22] but often disagreed in other areas, especially after Roosevelt's death.^{[citation needed]} William O. Douglas and Black served until the 1970s and joined or wrote many of the major decisions of theWarren Court, while Jackson and Frankfurter advocatedjudicial restraint and deference to elected officials.^[23][24]

After his victory in the 1940 election, Roosevelt embarked on a public campaign to win congressional support for aid to the British. In December 1940, Roosevelt received an appeal from Churchill explaining London could not finance the “cash and carry” provision of the Neutrality Act. With British forces deeply committed to fighting Germany, Churchill asked Washington to provide loans and shipping for American goods.^[25] Roosevelt agreed and delivered a speech in which he called for the United States to serve as the "Arsenal of Democracy," supplying aid to those resisting Germany and other aggressors.^[26] He stated, "if Great Britain goes down, the Axis Powers will control the continents of Europe, Asia, Africa, Australia, and the high seas—and they will be in a position to bring enormous military and naval resources against this hemisphere."^[27]

In his January 1941Four Freedoms speech, Roosevelt laid out the case for an American defense of basic rights throughout the world.^[28] In that same speech, Roosevelt asked Congress to approve aLend-Lease program designed to provide military aid to Britain. The cover story was that the supplies were only being lent and would be returned after the war.^[29] With the backing of Willkie, the Lend-Lease bill passed by large majorities in both houses of Congress, with most of the opposition coming from Midwestern Republicans. Isolationists did, however, prevent the U.S. from providing naval escorts to merchant ships heading to Britain. Roosevelt also requested, and Congress granted, a massive boost in military expenditures. Military facilities, shipyards and munitions plants were built across the country (especially in the South) and the unemployment rate dropped below ten percent for the first time in over a decade. To oversee mobilization efforts, Roosevelt created the Office of Production Management, theOffice of Price Administration and Civilian Supply, and theSupply Priorities and Allocations Board.^[30]

In late 1940, Admiral Stark had sent Roosevelt thePlan Dog memo, which set forth four possible strategic war plans for fighting an anticipatedtwo-front war against Japan and Germany. Of the four strategies, Stark advocated for the so-called "Plan Dog," which contemplated aEurope first strategy and the avoidance of conflict with Japan for as long as possible. A key part of this strategy was to ensure that Britain remained in the fight against Germany until the United States, potentially with the aid of other countries, could launch a land offensive into Europe. Roosevelt did not publicly commit to Plan Dog, but it motivated him to launch talks between American and British military staff, codenamed "ABC–1." In early 1941, American and British military planners jointly agreed to pursue a Europe first strategy.^[31] In July 1941, Roosevelt ordered Secretary of War Stimson to begin planning for total American military involvement. The resulting "Victory Program" provided the army's estimates of the mobilization of manpower, industry, and logistics necessary to defeat Germany and Japan. The program planned to dramatically increase aid to the Allied nations and to prepare a force of ten million men in arms, half of whom would be ready for deployment abroad in 1943.^[32]

When Germanyinvaded the Soviet Union in June 1941, Roosevelt extended Lend-Lease to Moscow. Thus, Roosevelt had committed the American economy to theAllied cause with a policy of "all aid short of war."^[32] Some Americans were reluctant to aid the Soviet Union, but Roosevelt believed that the Soviets would be indispensable in the defeat of Germany.^[33] Execution of the aid fell victim to foot-dragging in the administration, so FDR appointed a special assistant,Wayne Coy, to expedite matters. The relationship with Moscow was informal—there was no treaty with the USSR.^[34]

In February 1941, Hitler refocused the war against Britain from air raids to naval operations, specificallyU-boat (German submarine) raids against convoys of food and munitions headed to Britain. Canada and Britain provided naval escorts but Churchill needed more and asked Roosevelt. Roosevelt said no—he was still reluctant to challenge anti-war sentiment.^[35] In May, German submarines sank theSSRobin Moor, an American freighter, but Roosevelt decided not to use the incident as a pretext to increase the navy's role in the Atlantic.^[36] Meanwhile, Germany celebrated victories against Yugoslavia, Greece, Russia, and the British forces in the Mediterranean.^[37]

In August 1941, Roosevelt and Churchill met secretly inArgentia,Newfoundland. This meeting produced theAtlantic Charter, which conceptually outlined global wartime and postwar goals.^[38] Each leader pledged to support democracy,self-determination, free trade, and principles of non-aggression.^[39] Less than a month after Roosevelt and Churchill met at Argentia, a German submarine fired on the U.S. destroyerGreer, but the torpedo missed. In response, Roosevelt announced a new policy in which the U.S. would attack German U-boats that entered U.S. naval zones.^[40] This "shoot on sight" policy effectively declared naval war on Germany and was approved by Americans in polls by a margin of 2-to-1.^[41] The Roosevelt administration also took control over Greenland and Iceland, which provided useful naval bases in the northern Atlantic Ocean.

Seeking to bolster U.S. power in the Western Hemisphere and eliminate German influence, the Roosevelt administration increased military, commercial, and cultural engagement with Latin America.Nelson Rockefeller played a major role. The FBI trained the secret police of friendly nations. German sales to military forces was displaced by American aid. Pro-German newspapers and radio stations were blacklisted. Government censorship was encouraged, while Latin America was blanketed with pro-American propaganda.^[42] Hitler did not aggressively respond to U.S. actions, as he wanted to avoid any incident that would bring the U.S. into the war prior to the defeat of the Soviet Union.^[43]

In October 1941, theUSSKearny, along with other warships, engaged a number of U-boats south of Iceland; theKearny took fire and lost eleven crewmen.^[44] Following the attack, Congress amended the Neutrality Act to allow U.S. ships to transport material to Britain, effectively repealing the last provision of the cash and carry policy.^[45] However, neither theKearny incident nor an attack on theUSSReuben James changed public opinion as much as Roosevelt hoped they might.^[46][47]

Roosevelt signing declaration of waragainst Japan (left) on December 8 andagainst Germany (right) on December 11, 1941.

By 1940, Japan had conquered much of the Chinese coast and major river valleys, but had been unable to defeat either theNationalist government ofChiang Kai-shek or theCommunist forces underMao Zedong. Though Japan's government was nominally led by the civilian government of Prime MinisterFumimaro Konoye, Minister of WarHideki Tojo and other military leaders controlled the Japanese government.^[48] Tojo sent his military to take control of lightly defended French colonies in Indochina, which provided important resources as well as a conduit of supply to Chinese forces. When Japanoccupied northernFrench Indochina in late 1940, Roosevelt authorized increased aid to the Republic of China, a policy that won widespread popular support.^[49] He also implemented a partial embargo on Japan, preventing the export of iron and steel. Over the next year, the Roosevelt administration debated imposing an embargo on oil, the key American export to Japan. Though some in the administration wanted to do everything possible to prevent Japanese expansion, Secretary of State Hull feared that cutting off trade would encourage the Japanese to meet its needs for natural resources through the conquest of theDutch East Indies,British Malaya,British Burma, or the American Philippines.^[50]

With Roosevelt's attention focused on Europe, Hull took the lead in setting Asian policy and negotiating with Japan.^[50] Beginning in March 1941, Hull and Japanese ambassadorKichisaburō Nomura sought to reach an accommodation between their respective governments. As the U.S. was not willing to accept the Japanese occupation of China, and Japan was not willing to withdraw from that country, the two sides were unable to reach an agreement. After Germany launched its invasion of the Soviet Union in June 1941, the Japanese declined to attack Soviet forces in Siberia, ending a long-running internal debate over the best target for Japanese expansion. In July, Japan took control of southern French Indochina, which provided a potential staging ground for an attack on British Burma and Malaya and the Dutch East Indies.^[51] In response, the U.S. cut off the sale of oil to Japan, which thus lost more than 95 percent of its oil supply.^[49]

Following the American embargo, Japanese planners studied how to seize the Dutch East Indies, which had a large supply of oil. Success required the capture the American Philippines and the British base atSingapore. That required sinking theUnited States Pacific Fleet, which was stationed at thenaval base at Pearl Harbor in Hawaii. The planners did not see the total defeat of the United States as a feasible outcome. Japanese leaders expected that a decisive naval victory would convince Washington to negotiate a compromise. Prime Minister Konoye sought a summit with Roosevelt in order to negotiate a deal, but Roosevelt insisted the Japanese withdrawal from China first. Tojo succeeded Konoye as prime minister in October, 1941, and the Japanese began preparations for an attack on American, British and Dutch possessions. In November, Nomura made a final offer, asking for reopened trade and acceptance of the Japanese campaign in China in return for Japan's pledge not to attack Southeast Asia. In part because the U.S. feared that Japan would attack the Soviet Union after conquering China, Roosevelt rejected the offer, and negotiations collapsed on November 26.^[52]

On the morning of December 7, 1941, the Japanesestruck the U.S. naval base at Pearl Harbor with a surprise attack, knocking out the main Americanbattleship fleet and killing 2,403 American servicemen and civilians.^[53] Mainstream scholars have all rejected theconspiracy thesis that Roosevelt, or any other high government officials, knew in advance about the Japanese attack on Pearl Harbor. The Japanese had kept their secrets closely guarded, and while senior American officials were aware that war was imminent, they did not expect an attack on Pearl Harbor.^[54][55][13]

After Pearl Harbor, antiwar sentiment in the United States evaporated overnight. For the first time since the early 19th century, foreign policy became the top priority for the American public.^[56] Roosevelt called for war in his famous "Infamy Speech" to Congress, in which he said: "Yesterday, December 7, 1941—a date which will live in infamy—the United States of America was suddenly and deliberately attacked by naval and air forces of the Empire of Japan." On December 8, Congress voted almost unanimously todeclare war against Japan.^[57] On December 11, 1941, Germanydeclared war on the United States, whichresponded in kind.^[58]

Roosevelt portrayed the war as a crusade against the aggressive dictatorships that threatened peace and democracy throughout the world.^[59] He and his military advisers implemented a Europe-first strategy with the objectives of halting the German advances in the Soviet Union and in North Africa; launching an invasion of western Europe with the aim of crushing Nazi Germany between two fronts; and saving China and defeating Japan. Public opinion, however, gave priority to the destruction of Japan. In any case, Japan was attacking the American Philippines and so in practice the Pacific had priority in 1942.^[60] Japan bombed American air bases in the Philippines just hours after the attack on Pearl Harbor and destroyed the B-17 fleet parked on the ground.^[61] By the end of the month, theJapanese had invaded the Philippines. GeneralDouglas MacArthur led American resistance in the Philippines until March 1942, when Roosevelt ordered him to evacuate to Australia, which became the forward American base.^[62] American forces in the Philippines surrendered in May 1942, leaving Japan with approximately ten thousand American prisoners. While it was subduing the Philippines, Japan also conquered Malaya, Singapore, Burma, and the Dutch East Indies.^[63]

In his role as the leader of the United States before and during World War II, Roosevelt tried to avoid repeating what he saw as Woodrow Wilson's mistakes in World War I.^[64] He often made exactly the opposite decision. Wilson had called for neutrality in thought and deed, while Roosevelt made it clear his administration strongly favored Britain and China. Unlike the loans in World War I, the United States made large-scale grants of military and economic aid to the Allies through Lend-Lease, with little expectation of repayment. Wilson failed to expand war production before the declaration of war; Roosevelt made an all-out effort in 1940. Wilson waited for the declaration to begin a draft; Roosevelt started one in 1940. Wilson never made the United States an official ally but Roosevelt did. Wilson never met with the top Allied leaders but Roosevelt did. Wilson proclaimed independent policy, as seen in the 14 Points, while Roosevelt sought a collaborative policy with the Allies. In 1917, the United States declared war on Germany; in 1941, Roosevelt waited until the enemy attacked at Pearl Harbor. Wilson refused to collaborate with the Republicans; Roosevelt named leading Republicans to head the War Department and the Navy Department. Wilson let General George Pershing make the major military decisions; Roosevelt made the major decisions in his war including the "Europe first" strategy. He rejected the idea of an armistice and demanded unconditional surrender. Roosevelt often mentioned his role asAssistant Secretary of the Navy in the Wilson administration, but added that he had profited more from Wilson's errors than from his successes.^{[65][66][67][68]}Robert E. Sherwood argues:

Roosevelt could never forget Wilson's mistakes.... there was no motivating force in all of Roosevelt's wartime political policy stronger than the determination to prevent repetition of the same mistakes.^[69]

In late December 1941 Churchill and Roosevelt met at theArcadia Conference in Washington, which established a joint strategy between the U.S. and Britain.^[70] Both agreed on aEurope first strategy that would prioritize the defeat of Germany before Japan.^[71] With British forces focused on the war in Europe, and with the Soviet Union not at war with Japan, the United States would take the lead in the Pacific War despite its own focus on Germany.^[72] The U.S. and Britain established the Combined Chiefs of Staff to coordinate military policy and theCombined Munitions Assignments Board to coordinate the allocation of supplies.^[71] An agreement was also reached to establish a centralized command in the Pacific theater calledABDA, named for the American, British, Dutch, and Australian forces in the theater.^[73] On January 1, 1942, the United States, Britain, China, the Soviet Union, and twenty-two other countries issued theDeclaration by United Nations, in which each nation pledged to defeat the Axis powers. These countries opposed to the Axis would be known as theAllied Powers; sometimes they were called the "United Nations" before the UN was set up in 1945.^[74]

Roosevelt coined the term "Four Policemen" to refer to the "Big Four" Allied powers of World War II: the United States, the United Kingdom, the Soviet Union, and China. Roosevelt, Churchill, Soviet leaderJoseph Stalin, and Chinese Generalissimo Chiang Kai-shek cooperated informally on a plan in which American and British troops concentrated in the West, Soviet troops fought on theEastern front, and Chinese, British, and American troops fought in Asia and the Pacific. The Allies formulated strategy in a series of high-profile conferences as well as contact through diplomatic and military channels.^[75] Roosevelt had a close relationship with Churchill, but he and his advisers quickly lost respect for Chiang's government, viewing it as hopelessly corrupt.^[76] GeneralJoseph Stilwell, who was assigned to lead U.S. forces in theChina Burma India Theater, came to believe that Chiang was more concerned with defeating Mao's Communists than with defeating the Japanese.^[77] U.S. and Soviet leaders distrusted each other throughout the war, and relations further suffered after 1943 as both sides supported sympathetic governments in liberated territories.^[78]

By the end of the war, several states, including all of Latin America, had joined the Allies.^[79] Roosevelt's appointment of youngNelson Rockefeller to head the new, well-fundedOffice of the Coordinator of Inter-American Affairs provided energetic leadership.^[80] Under Rockefeller's leadership, the U.S. spent millions on radio broadcasts, motion pictures, and other anti-fascist propaganda. American advertising techniques generated a push back in Mexico especially, where well-informed locals resisted heavy-handed American influence.^[81] Nevertheless, Mexico was a valuable ally in the war. A deal was reached whereby 250,000 Mexican citizens living in the United States served in the American forces; over 1000 were killed in combat.^[82] In addition to propaganda, large sums were allocated for economic support and development. On the whole the Roosevelt policy in Latin America was a political success, except in Argentina, which tolerated German influence and refused to follow Washington's lead until the war was practically over.^[83][84] Outside of Latin America, the U.S. paid particularly close attention to its oil-rich allies in the Middle East, marking the start of sustained American engagement in the region.^[85]

The main American role in the war, beyond the military mission itself, was financing the war and providing large quantities of munitions and civilian goods. Lend-Lease, as passed by Congress in 1941, was a declaration of economic warfare, and that economic warfare continued after the attack on Pearl Harbor.^[86] Roosevelt believed that the financing of World War I through loans to the Allies, with the demand for repayment after the war, had been a mistake. He set up the Lend-Lease system as a war program, financed through the military budget; as soon as the war with Japan ended, it was terminated.^[87] The president chose the leadership—Hopkins andEdward Stettinius Jr. played major roles—and exercised close oversight and control.^[88] One problem that bedeviled the program in 1942 was the strictly-limited supply of munitions that had to be divided between Lend-Lease and American forces. Roosevelt insisted to the military that Russia was to get all the supplies he had promised it.^[89] Lend-Lease aid to the Soviet Union declined somewhat in mid-1942 after the United States began to prepare for military operations in North Africa.^[90]

The U.S. spent about $40 billion on Lend-Lease aid to the British Empire, the Soviet Union, France, China, and some smaller countries. That amounted to about 11% of the cost of the war to the U.S. It received back about $7.8 billion in goods and services provided by the recipients to the United States, especially the cost of food and rent for American installations abroad.^[91] Britain received $30 billion, Russia received $10.7 billion, and all other countries $2.9 billion.^[92] When the question of repayment arose, Roosevelt insisted the United States did not want a postwar debt problem of the sort that had troubled relations after the first world war. The recipients provided bases and supplies to American forces on their own soil; this was referred informally as "Reverse Lend-Lease," and the combined total of this aid came to approximately $7.8 billion overall.^[93] In the end, none of the Allied Powers paid for the goods received during the war, although they did pay for goods in transit that were received after the program ended. Roosevelt told Congress in June 1942:^[94]

The real costs of the war cannot be measured, nor compared, nor paid for in money. They must and are being met in blood and toil.... If each country devotes roughly the same fraction of its national production to the war, then the financial burden of war is distributed equally among the United Nations in accordance with their ability to pay.

A major issue in the economic war was the transportation of supplies. After Germany declared war on the United States, Hitler removed all restrictions on the German submarine fleet. German submarines ravaged Allied shipping in the Atlantic, with many of the attacks taking place within ten miles of theEast Coast of the United States in early 1942.^[95] The U.S. Navy faced difficulties in simultaneously protecting Atlantic shipping while also prosecuting the war against Japan, and over one millions tons of Allied shipping was lost in 1942.^[96] The cracking of the GermanEnigma code, along with the construction and deployment of American naval escorts andmaritime patrol aircraft helped give the Allied Powers the upper hand in the Battle of the Atlantic after 1942. After the Allies sank dozens of U-boats in early 1943, most German submarines were withdrawn from the North Atlantic.^[97]

The United States began astrategic bombing campaign against Axis forces in Europe in mid-1942. Attacks initially targeted locations in France, Belgium, and the Netherlands; U.S. bombers launched their first attack against a target in Germany in January 1943.^[98] In an attempt to destroy Germany's industrial capacity, Allied bombers struck targets such as oil refineries and ball-bearing factories. After taking heavy losses inOperation Tidal Wave and theSecond Raid on Schweinfurt, the U.S. significantly scaled back the strategic bombing of Germany.^[99] GeneralCarl Andrew Spaatz redirected U.S. strategic bombing efforts to focus on German aircraft production facilities, and the Allies enjoyed air superiority in Europe after February 1944.^[100] Allied strategic bombing escalated in late 1944, with an emphasis placed on Germany's transportation infrastructure and oil resources.^[101] With the goal of forcing a quick German surrender, in 1945 the Allies launched attacks onBerlin andDresden that killed tens of thousands of civilians.^[102]

AfterKristallnacht in 1938, Roosevelt helped expedite Jewish immigration from Germany and allowed Austrian and German citizens already in the United States to stay indefinitely. He was prevented from accepting more Jewish immigrants by the prevalence ofnativism andantisemitism among voters and members of Congress, resistance in theAmerican Jewish community to the acceptance of Eastern European Jewish immigrants, and the restrictiveImmigration Act of 1924.^[103] The Immigration Act of 1924 allowed only 150,000 immigrants to the United States per year and set firm quotas for each country, and in the midst of the Great Depression there was little popular support for revisions to the law that would have allowed for a more liberal immigration policy.^[104] Roosevelt pushed the limits of his executive authority where possible, which allowed for several Austrian and German Jews, includingAlbert Einstein, to escape from Europe or remain in the United States past their visa expirations.^[105]

Hitler chose to implement the "Final Solution"—the extermination of the European Jewish population—by January 1942, and American officials learned of the scale of the Nazi extermination campaign in the following months. Against the objections of the State Department, Roosevelt convinced the other Allied leaders to jointly issue theJoint Declaration by Members of the United Nations, which condemned the ongoingHolocaust and promised to try its perpetrators aswar criminals. In January 1944, Roosevelt established theWar Refugee Board to aid Jews and other victims of Axis atrocities. Aside from these actions, Roosevelt believed that the best way to help the persecuted populations of Europe was to end the war as quickly as possible. Top military leaders and War Department leaders rejected any campaign to bomb theextermination camps or the rail lines leading to the camps, fearing it would be a diversion from the war effort. According to biographer Jean Edward Smith, there is no evidence that anyone ever proposed such a campaign to Roosevelt himself.^[106]

Up until Pearl Harbor, Congress played a very active role in foreign and military policy, dealing with neutrality laws, the draft, and Lend Lease. As with the general public, congressional sentiment was very hostile toward Germany and Japan, favorable toward China, and somewhat less favorable toward Britain. Congressmen with strong German, Irish Catholic, or Scandinavian constituencies generally supported isolationist policies. After Pearl Harbor, isolationism disappeared in Congress and was not a factor in the 1942 or 1944 elections. Some leading Republican isolationists, most notably SenatorArthur Vandenberg of Michigan, SenatorWarren Austin of Vermont, and CongressmanEverett Dirksen of Illinois, became leading internationalists.^[107][108] Republican SenatorRobert A. Taft stayed quiet on foreign and defense issues, while many of the energetic isolationists of the 1930s, including Hiram Johnson and William Borah, were in poor health or had seen their influence decline. During the war, there were no secret briefings, and members of Congress were often no better informed than the average newspaper reader. Congressman did pay attention to military installations in their district, but rarely raised issues of broader military or diplomatic scope, with the partial exception of postwar plans.^[109] Congress also established theTruman Committee, which investigated wartime profiteering and other defects in war production.^[110] Debates on domestic policy were as heated as ever, and the major Republican gains in Congress in 1938 and 1942 gave the Conservative Coalition the dominant voice on most domestic issues.^[111][112]

The home front was subject to dynamic social changes throughout the war, though domestic issues were no longer Roosevelt's most urgent policy concern. The military buildup spurred economic growth. Unemployment fell in half from 7.7 million in early 1940 to 3.4 million in late 1941, and fell in half again to 1.5 million in late 1942, out of a labor force of 54 million.^[a] To pay for increased government spending, in 1941 Roosevelt proposed that Congress enact an income tax rate of 99.5% on all income over $100,000; when the proposal failed, he issued an executive order imposing an income tax of 100% on income over $25,000, which Congress rescinded. TheRevenue Act of 1942 instituted top tax rates as high as 94% (after accounting for theexcess profits tax) and instituted the first federalwithholding tax. It also greatly increased the tax base; only four million Americans paid the federal income taxes before the war, while by the end of the war over 40 million Americans paid federal income taxes.^[114][115] In 1944, Roosevelt requested that Congress enact legislation which would tax all "unreasonable" profits, both corporate and individual, and thereby support his declared need for over $10 billion in revenue for the war and other government measures. Congress overrode Roosevelt's veto to pass asmaller revenue bill raising $2 billion.^[116] Congress also abolished several New Deal agencies, including the CCC and the WPA.^[117]

Roosevelt's 1944 State of the Union Address advocated a set of basic economic rights Roosevelt dubbed as theSecond Bill of Rights.^[118] In the most ambitious domestic proposal of the era, veterans groups led by theAmerican Legion secured theG.I. Bill, which created a massive benefits program for almost all men and women who served. Roosevelt had wanted a narrower bill focused more on poor people, but he was out-maneuvered by those on both his right and his left who, each for their own reasons, favored a blanket approach. Comprehensive coverage, regardless of income or combat experience, would avoid the prolonged disputes in the 1920s and 1930s over the aid to veterans. Benefits included a year of unemployment pay at $20 a week, tuition and living expense to attend high school or college, and low-cost loans to buy a home, farm or business.^[119] Of the fifteen million Americans who served in World War II, more than half would benefit from the educational opportunities provided for in the G.I. Bill.^[120]

To coordinate war production and other aspects of the home front, Roosevelt established theWar Shipping Administration, theOffice of Price Administration, theBoard of Economic Warfare, and theWar Labor Board.^[121] The U.S. government generally relied on voluntary contracting to mobilize the production of war materials, but in rare cases the Roosevelt administration temporarily took control of industrial facilities. Congress also created tax incentives designed to encourage the shift to military production, while the Reconstruction Finance Corporation continued to offer loans to help expand industrial capacity. Despite efforts made by Congress to encourage contracting with smaller companies, most military contracts went to the largest corporations in the United States.^[122] War production increased dramatically after the attack on Pearl Harbor, but that production fell short of the goals established by the president, due in part to manpower shortages.^[123] The effort was also hindered by numerous strikes, especially among union workers in the coal mining and railroad industries, which lasted well into 1944.^[124][125] Mobilization was also affected by the military service of over 16 million individuals during the war; approximately one-in-five families had at least one individual serve during the war.^[126]

Despite various challenges, between 1941 and 1945, the United States produced 2.4 million trucks, 300,000 military aircraft, 88,400 tanks, and 40 billion rounds of ammunition. The production capacity of the United States dwarfed that of other countries; for example, in 1944, the United States produced more military aircraft than the combined production of Germany, Japan, Britain, and the Soviet Union.^[127] The United States suffered from inflation during the war, and the administration instituted price and wage controls.^[128] In 1943, Roosevelt established theOffice of War Mobilization (OWM) to oversee war production. The OWM was led byJames F. Byrnes, who came to be known as the "assistant president" due to his influence.^[129] As inflation continued to present a major challenge, the administration expanded arationing program that covered an increasing number of consumer goods.^[130]

In August 1939, physicistsLeo Szilard and Albert Einstein sent theEinstein–Szilárd letter to Roosevelt, warning of the possibility of aGerman project to develop an atomic bomb (now called a "nuclear weapon").^[131] The thought of Germany to build a bomb first was terrifying. Roosevelt authorized preliminary research.^[b] After Pearl Harbor, a few top Congressional leaders secretly gave the administration the necessary money. GeneralLeslie Groves, the Army's engineer who built the Pentagon, took charge of theManhattan Project. Roosevelt and Churchill agreed to jointly pursue the project with theQuebec Agreement allowing American scientists to cooperate with their British counterparts, including at least one spy who provided Moscow with the top secret details.^[133] The Manhattan Project cost more than $2 billion, employed 150,000 individuals, and required the construction of massive facilities atOak Ridge,Los Alamos, and other parts of the country.^[134]

In 1941,A. Philip Randolph and otherAfrican-American leaders planned a march on Washington to protest segregation in the military and the defense industry.^[135] In response, Roosevelt issuedExecutive Order 8802, which prohibited racial and religious discrimination in employment among defense contractors. Randolph then cancelled the march on Washington.^[136] Roosevelt also established theFair Employment Practices Committee (FEPC) to enforce Executive Order 8802. The FEPC was the first national program directed againstemployment discrimination, and it played a major role in opening up new employment opportunities to non-white workers.^[137] During the war, the number of African Americans employed in the defense industry increased dramatically, primarily outside the South. Likewise, there was rapid growth in the number of African Americans employed by the federal government in segregated roles. Many African Americans were drafted into the Army. Military units remained segregated and most black people were assigned to non-combat roles.^[138] TheNAACP grew dramatically during the war, buoyed in part by Randolph's role in convincing Roosevelt to issue Executive Order 8802.^[139] The war also saw the acceleration of theGreat Migration, as African Americans moved from rural Southern areas to manufacturing centers outside of the South.^[140] Roosevelt encouraged employers to hire African Americans, as well as women and ethnics workers, to meet the needs of the wartime labor shortage.^[141]

Roosevelt had cultivated a friendly relationship with the domestic press throughout his presidency, and his good relations with the press helped ensure favorable coverage of his war-time policies without resorting to heavy-handedcensorship. During World War I, the U.S. had passed acts such as theSedition Act of 1918 to crack down on dissent, but Roosevelt largely avoided such harsh measures. He did orderFBIDirectorJ. Edgar Hoover to increase its investigations of dissidents and signed theSmith Act, which made it a crime to advocate the overthrow of the federal government.^[142] The trials against antiwar spokesmen on the far left and far right collapsed in failure.^[143]

The attack on Pearl Harbor raised concerns in the public regarding the possibility of sabotage byJapanese Americans. This suspicion was fed by long-standing racism against Japanese immigrants, as well as the findings of theRoberts Commission, which concluded that the attack on Pearl Harbor had been assisted by Japanese spies.^[144] The size of theJapanese population in Hawaii precluded mass internment in that territory, but there was strong popular support for the removal of Japanese from theWest Coast.^[145] In February 1942, President Roosevelt signedExecutive Order 9066, which provided for the relocation of hundreds of thousands of Japanese-American citizens and immigrants from the West Coast.^[146] They were forced to liquidate their properties and businesses andinterned in hastily built camps in interior, harsh locations. Distracted by other issues, Roosevelt had delegated the decision for internment to Secretary of War Stimson, who in turn relied on the judgment of Assistant Secretary of WarJohn J. McCloy. The Supreme Court upheld the constitutionality of the executive order in the 1944 case ofKorematsu v. United States.^[144] The internment order was rescinded shortly after theKorematsu decision, and Japanese-Americans were allowed to return to the West Coast.^[147] ManyGerman andItalian citizens were also arrested or placed into internment camps.^[148]

The Soviets urged an Anglo-American invasion of German-occupied France in order to divert troops from the Eastern front.^[149] Churchill in particular was reluctant to commit troops in Europe in 1942, and strongly favored launching a campaign designed to expel the Axis Powers from North Africa and to consolidate Allied power in the Mediterranean.^[150] General Marshall and Admiral King opposed the decision to prioritize North Africa, which they saw as relatively unimportant to the overall war. Roosevelt overrode their objections, as he wanted the U.S. to commit ground forces in the European theater, in 1942, and with British cooperation.^[151]

The Allies invadedFrench North Africa in November 1942, securing the quick surrender of local Vichy French forces.^[152] That surrender was arranged through a deal between GeneralDwight D. Eisenhower, the supreme commander of the Allied invasion of North Africa, and Vichy AdmiralFrançois Darlan. The cooperation with Darlan allowed the Allies to quickly gain control of much of North Africa, but it also alienatedFree French leaderCharles de Gaulle and other opponents of the Vichy regime. Darlan was assassinated in December 1942, while Vichy France broke relations with the United States and requested that German forces prevent the Allies from gaining control of FrenchTunisia. The experience with de Gaulle, Darlan, and another French leader,Henri Giraud, convinced Roosevelt of the necessity to avoid becoming closely associated with any French faction for the remainder of the war.^[153] In theTunisian Campaign, Eisenhower initially faced great difficulties in leading his inexperienced force to success, but Allied forces eventually gained the upper hand. 250,000 Axis soldiers surrendered in May 1943, bringing an end to theNorth African Campaign.^[154]

At the January 1943Casablanca Conference, the U.S. and Britain agreed to defeat Axis forces in North Africa and then launch an invasion ofSicily after the North African campaign, with an attack on France to follow in 1944. At the conference, Roosevelt also announced that he would only accept theunconditional surrender of Germany, Japan, and Italy.^[155] The demand for unconditional surrender was calculated to reassure the Soviets, who were still insisting on an immediate attack on German-occupied France, that the United States would not seek a negotiated peace with Germany.^[156] In February 1943, the Soviet Union turned the tide on the eastern front by winning a decisive victory at theBattle of Stalingrad. The Allies launched aninvasion of Sicily in July 1943, capturing the island by the end of the following month.^[129] During the campaign in Sicily, KingVictor Emmanuel III of Italy arrested Mussolini and replaced him withPietro Badoglio, who secretly negotiated a surrender with the Allies. Despite his earlier insistence on unconditional surrender, Roosevelt acceptedarmistice terms that allowed Badoglio to remain in power.^[157] Germany quickly restored Mussolini to power and set up a puppet state in northern Italy.^[129] TheAllied invasion of mainland Italy commenced in September 1943, but theItalian Campaign moved slowly until 1945.^[158] Roosevelt consented to the campaign only on the condition that the British commit to an invasion of France in mid-1944, and the Allied Powers began to build up a force for that operation, diverting soldiers from the Italian Campaign.^[157]

To command the invasion of France, Roosevelt passed over Marshall and in favor of General Eisenhower.^[159] Roosevelt had originally wanted to appoint Marshall to the command, but top military leaders argued that Marshall was indispensable in his role in Washington.^[160] While building up forces in Britain, the Allied Powers engaged inOperation Bodyguard, an elaborate campaign designed to mask where the Allies would land in Northwestern Europe.^[161] Eisenhower launchedOperation Overlord, a landing in the Northern French region ofNormandy, on June 6, 1944. Supported by 12,000 aircraft that provided complete control of the air, and the largest naval force ever assembled, the Allies successfully established a beachhead in Normandy and then advanced further into France.^[162] Though reluctant to back an unelected government, Roosevelt recognized Charles de Gaulle'sProvisional Government of the French Republic as the de facto government of France in July 1944.^[163]

After theBattle of the Falaise Pocket, the Allies pushed Axis forces back towards Germany, capturing Paris in August 1944. That same month, the Allies launchedOperation Dragoon, an invasion of Southern France.^[164] Facing logistical issues, Allied forces attempted to secure the Belgian port ofAntwerp before moving on Germany'sRuhr region, but the failure ofOperation Market Garden delayed theAllied invasion of Germany.^[165] In late 1944, Hitler began to amass forces for a major offensive designed to convince the United States and Britain to seek a negotiated peace. A surprise German attack in December 1944 marked the start of theBattle of the Bulge, but the Allies were able to beat back the attack in the following weeks.^[166] The Allies advanced across theRhine River in March 1945, and took control of the Ruhr and theSaarland, another key industrial region.^[167] By April 1945, Nazi resistance was crumbling in the face of advances by both the Western Allies and the Soviet Union.^[168]

After sweeping acrossMaritime Southeast Asia in the months following Pearl Harbor, Japan looked to further expand its territory, taking control of theSolomon Islands and parts ofNew Guinea. In May 1942, American and Australian forces defeated the Japanese in theBattle of the Coral Sea, prompting a Japaneseland campaign across the island of New Guinea.^[169] Seeking to seize control of a strategically placed island and destroy the U.S. fleet in the Pacific, Japan also launched an attack on the American-heldMidway Atoll.^[170] With the assistance of theMagiccryptanalysis project, AdmiralChester Nimitz led an American force that defeated the Japanese navy at theBattle of Midway. The Battle of Midway resulted in the Japanese fleet's loss of four crucial aircraft carriers, and the battle marked a major reversal of fortune in the Pacific War.^[171] In August 1942, the United Stateslaunched an invasion of the Japanese-held South Pacific island ofGuadalcanal in the Solomon Islands; Japanese and American forces contested control of Guadalcanal until February 1943.^[172] After the Battle of Guadalcanal, the U.S. adopted anisland hopping strategy in order to avoid entrenched Japanese garrisons. By early 1944, Allied forces had established control over much of New Guinea and had landed on the adjacent island ofNew Britain.^[173]

While thecampaign in the Southwest Pacific continued, U.S. forces launchedan offensive in the Central Pacific, beginning with the November 1943Battle of Tarawa.^[174] The U.S. next captured Japanese positions in theMarshall Islands and theCaroline Islands.^[175] In June 1944, the U.S. launchedan attack on Saipan, in theMariana Islands, gaining control of the island in early July at the cost of fourteen thousand casualties.^[176] As the Battle of Saipan continued, the U.S. won a major naval victory in theBattle of the Philippine Sea, sinking three Japanese aircraft carriers.^[177] In July 1944, Roosevelt met with Nimitz and MacArthur, where he authorized the continuation of the campaigns in the Southwest Pacific and the Central Pacific. MacArthur's force would continue its advance towards the Philippines, while the Central Pacific campaign would work its way towards Japan.^[178] The U.S.landed on the Philippine island ofLeyte in October 1944, provoking a Japanese naval response, as the Philippine Islands maintained a critical position on the Japanese oil supply route from the Dutch East Indies. The Japanese navy was decimated in the resultingBattle of Leyte Gulf, which is sometimes claimed to be the "largest naval battle in history." MacArthur's forces secured control of Leyte in December and had largely re-taken control of the Philippines by March 1945.^[179]

The U.S. began launchingstrategic bombing raids on Japan from the Mariana Islands in November 1944, but Japan still controlled several islands that provided defense for theJapanese archipelago. In February 1945, the U.S.launched an invasion of the well-defended island ofIwo Jima, taking control of that island the following month.^[180] On April 1, the U.S.landed onOkinawa Island, the largest of theRyukyu Islands. The Japanese allowed the Americans to land on the island before launching a fierce attack that includedkamikaze suicide attacks by Japanese aircraft. Japanese forces on Okinawa held out until June 1945; U.S. forces suffered over 60,000 casualties during the operation.^[181]

In late 1943, Roosevelt, Churchill, and Stalin agreed to meet to discuss strategy and post-war plans at theTehran Conference, which marked Roosevelt's first face-to-face meeting with Stalin.^[182] At the conference, Britain and the United States committed to opening a second front against Germany in 1944, while Stalin committed to entering the war against Japan at an unspecified date.^[183] Roosevelt also privately indicated acceptance of Soviet control of theBaltic states and Soviet plans toshift Poland's borders to the west.^[184] Stalin, meanwhile, committed to joining the war against Japan after the defeat of Germany.^[185]

Post-war plans increasingly came to the fore as the Allies won several major victories in 1944. The wartime economic boom and the experience of the Great Depression convinced many Americans of the need to lower trade barriers. Lend-Lease agreements included provisions for eliminating tariffs, and the U.S. especially desired the dismantlement of the BritishImperial Preference system. At theBretton Woods Conference, the Allies agreed to the creation of theInternational Monetary Fund, which would provide for currency stabilization, and theWorld Bank, which would fund post-war rebuilding. Taking up the Wilsonian mantle, Roosevelt also pushed for the establishment of theUnited Nations, a permanent intergovernmental organization that would succeed the League of Nations.^[186]

Roosevelt, Churchill, and Stalin met for a second time at the February 1945Yalta Conference. With the end of the war in Europe approaching, Roosevelt's primary focus was on convincing Stalin to enter the war against Japan; the Joint Chiefs had estimated that anAmerican invasion of Japan would cause as many as one million American casualties. In return for the Soviet Union's entrance into the war against Japan, the Soviet Union was promised control of Asian territories such asSakhalin Island.^[187] With the Soviet Union in control of much of Eastern Europe by early 1945, Roosevelt had little leverage over Soviet actions in Eastern Europe.^[188] He did not push for the immediate evacuation of Soviet soldiers from Poland, but he did win the issuance of the Declaration on Liberated Europe, which promised free elections in countries that had been occupied by Germany.^[187] Against Soviet pressure, Roosevelt and Churchill refused to consent to imposing huge reparations and deindustrialization on Germany after the war.^[189] Roosevelt's role in the Yalta Conference has been controversial; critics charge that he naively trusted the Soviet Union to allow free elections in Eastern Europe, while supporters argue that there was little more that Roosevelt could have done for the Eastern European countries given the Soviet occupation and the need for cooperation with the Soviet Union during and after the war.^{[190][191][192]}

At the Yalta Conference, Roosevelt, Churchill, and Stalin agreed to the establishment of the United Nations, as well as the structure of theUnited Nations Security Council, which would be charged with ensuringinternational peace and security.^[187] The participants at Yalta also agreed that the United Nations would convene for the first time inSan Francisco in April 1945 in theUnited Nations Conference on International Organization.^[193] Roosevelt considered the United Nations to be his most important legacy. He provided continuous backstage political support inside the United States, and with Churchill and Stalin abroad. He made sure that leading Republicans were on board, especially SenatorsArthur Vandenberg of Michigan,^[194] andWarren Austin of Vermont.^[195] The Allies had agreed to the basic structure of the new body at theDumbarton Oaks Conference in 1944.^[183] The Big Four of the United States, Britain, Soviet Union and China would make the major decisions, with France added later to provide permanent members of the all-powerful Security Council. Each had a veto power, thus avoiding the fatal weakness of the League of Nations, which had theoretically been able order its members to act in defiance of their own parliaments.^{[196][page needed]}

British, French, and Dutch leaders all hoped to retain or reclaim their colonial possessions after the war. The U.S. was committed to granting independence to the Philippines following the end of the war, and Roosevelt frequently pressured Churchill to similarly commit to the independence ofIndia, Burma, Malaya, andHong Kong.^[197] His motives included principled opposition to colonialism, practical concern for the outcome of the war, and the need to build support for the U.S. in a future independent India. Churchill was deeply committed to imperialism and pushed back hard. Because the U.S. needed British cooperation in India to support China, Roosevelt had to draw back on his anti-colonialism.^[198] That annoyed Indian nationalist leaders, though most of those leaders were in British prisons for the duration because they would not support the war against Japan.^{[199][page needed][200]} Roosevelt also promised to return Chinese territories seized by Japan since 1895, and ended the practice of Americanspecial rights in China.^[201]

Unlike 1940, Roosevelt openly sought re-election in 1944, and he faced little opposition for the Democratic nomination.^[202] Roosevelt favoredHenry Wallace or James Byrnes as his running mate in 1944, but Wallace was unpopular among conservatives in the party, while Byrnes was opposed by liberals and Catholics (Byrnes was an ex-Catholic). At the behest of party leaders, Roosevelt eventually got convinced to support and then accepted Missouri SenatorHarry S. Truman, who was acceptable to all factions of the political party. Truman was best known for his battle against corruption and inefficiency in wartime spending as the head of theTruman Committee.^[203]

Thomas E. Dewey, the Governor of New York and an internationalist, was the odds-on favorite and easily won the nomination at the1944 Republican National Convention. The GOP lambasted FDR and his administration for domestic corruption, bureaucratic inefficiency, tolerance of Communism, and military blunders. Dewey largely avoided foreign policy issues because of the deep split in his party between internationalists and isolationists. Labor unions threw their all-out support behind Roosevelt. Roosevelt won the1944 election by a comfortable margin with 53.4% of the popular vote and 432 out of the 531 electoral votes.^[204][205]

After returning to the United States from the Yalta Conference, Roosevelt addressed Congress on March 1,^[206] and many were shocked to see how old, thin and frail he looked. He spoke while seated in the well of the House, an unprecedented concession to his physical incapacity. Still in full command mentally, he firmly stated his primary commitment to a powerful United Nations:

The Crimean Conference [Yalta] ought to spell the end of a system of unilateral action, the exclusive alliances, the spheres of influence, the balances of power, and all the other expedients that have been tried for centuries—and have always failed. We propose to substitute for all these, a universal organization in which all peace-loving nations will finally have a chance to join.^[207]

Roosevelt had been in declining health since at least 1940, and by 1944 he was noticeably fatigued. In March 1944, shortly after his 62nd birthday, he underwent testing and was found to havehigh blood pressure,atherosclerosis, andcoronary artery disease. His heart was failing and there was no cure. On March 29, 1945, Roosevelt went to the Little White House at Warm Springs, Georgia, to rest before his anticipated appearance at the founding conference of the United Nations. On April 12, 1945, inWarm Springs,Georgia, while sitting for a portrait by Elizabeth Shoumatoff, Roosevelt said: "I have a terrific headache." He then slumped forward in his chair, unconscious, and was carried into his bedroom. The president's attending cardiologist, Howard Bruenn, diagnosed a massiveintracerebral hemorrhage. At 3:35 p.m., Roosevelt died at the age of 63 years old.^[208]

Less than a month after his death, on May 8, the war in Europe ended. Harry Truman, who had become president upon Roosevelt's death, dedicatedVictory in Europe Day and its celebrations to Roosevelt's memory. Truman kept the flags across the U.S. at half-staff for the remainder of the 30-day mourning period, saying that his only wish was "that Franklin D. Roosevelt had lived to witness this day."^[209]

The rapid expansion of government programs that occurred during Roosevelt's term redefined the role of the government in the United States, and Roosevelt's advocacy of government social programs was instrumental in redefiningliberalism for coming generations.^[210] Roosevelt's direct appeals to the public, legislative leadership, and executive reorganization dramatically changed the powers and responsibilities of the president.^[211] The New Deal Coalition that he established transformed national politics, ushering in the Fifth Party System.^[212] Through his actions before and during World War II, Roosevelt firmly established a leadership role for the United States on the world stage. His isolationist critics faded away, and even the Republicans joined in his overall policies.^[213]

Both during and after his terms,critics of Roosevelt questioned not onlyhis policies and positions, but even more so the consolidation of power in the White House at a time when dictators were taking over Europe and Asia.^[214] Many of the New Deal programs were abolished during the war by FDR's opponents. The powerful new wartime agencies were set up to be temporary and expire at war's end.^[215] The internment of Japanese-Americans is frequently criticized as a major stain on Roosevelt's record.^[216]

After Roosevelt's death, his widow Eleanor continued to be a forceful presence in U.S. and world politics, serving as delegate to the conference which established the United Nations and championing civil rights and liberalism generally. Truman replaced the Roosevelt cabinet members but theNew Deal coalition persisted into the 1970s. Young New DealerLyndon B. Johnson as president in 1964–1966 revived the energy and liberalism of the mid-1930s.^[217]

Inpolls of historians and political scientists, Roosevelt is consistently ranked as one of the three greatest presidents alongside George Washington and Abraham Lincoln.^{[218][219][220]} Summing up Roosevelt's impact, historianWilliam E. Leuchtenburg writes:

Franklin Delano Roosevelt served as President from March 1933 to April 1945, the longest tenure in American history. He may have done more during those twelve years to change American society and politics than any of his predecessors in the White House, save Abraham Lincoln. Of course, some of this was the product of circumstances; the Great Depression and the rise of Germany and Japan were beyond FDR's control. But his responses to the challenges he faced made him a defining figure in American history.^[211]

• First and second terms of the presidency of Franklin D. Roosevelt
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