The President of the United States during World War II was Franklin D. Roosevelt. He served as the 32nd president from 1933 until his death in 1945, leading the nation through both the Great Depression and World War II
. Roosevelt was in office throughout the entire U.S. involvement in the war, which began after the Japanese attack on Pearl Harbor on December 7, 1941, and continued until his death in April 1945
. During the war, Roosevelt played a central role in directing U.S. military and diplomatic efforts, working closely with Allied leaders such as British Prime Minister Winston Churchill and Soviet leader Joseph Stalin to form a grand alliance against the Axis powers
. He also oversaw major wartime strategies and decisions, including the Lend- Lease program to support Allied nations before the U.S. formally entered the war
. In summary, Franklin D. Roosevelt was the U.S. president who led the country through World War II until his death in 1945
