who was the president in world war ii
Roosevelt ran successfully for reelection in 1940. His victory made him the only U.S. President to serve for more than two terms. With World War II looming after 1938, Roosevelt gave strong diplomatic and financial support to China as well as the United Kingdom and the Soviet Union while the U.S. remained officially neutral. Following the Japanese attack on Pearl Harbor on December 7, 1941, an event he famously called "a date which will live in infamy", Roosevelt obtained a declaration of war on Japan the next day, and a few days later, on Germany and Italy. Assisted by his top aide Harry Hopkins and with very strong national support, he worked closely with British Prime Minister Winston Churchill, Soviet leader Joseph Stalin and Chinese Generalissimo Chiang Kai-shek in leading the Allies against the Axis Powers. Roosevelt supervised the mobilization of the U.S. economy to support the war effort and implemented a Europe first strategy, making the defeat of Germany a priority over that of Japan. He also initiated the development of the world's first atomic bomb and worked with the other Allied leaders to lay the groundwork for the United Nations and other post-war institutions. Roosevelt won reelection in 1944 but with his physical health seriously and steadily declining during the war years, he died in April 1945, just 11 weeks into his fourth term. The Axis Powers surrendered to the Allies in the months following Roosevelt's death, during the presidency of Roosevelt's successor, Harry S. Truman.