The World at War and FDR's Key Decisions
The U.S. was isolationist in the 1930s - a sentiment F.D.R. struggled to overcome. After war broke out, he helped the Allies when he could, but the U.S. officially remained on the sidelines until Japan attacked Pearl Harbor on Dec. 7, 1941.
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Photo Credits: HANS WILD / TIME & LIFE PICTURES/ GETTY, THOMAS D. MCAVOY / TIME & LIFE Pictures / GETTY, CORBIS, 2-AP, BETTMANN / CORBIS