Day of Infamy speech Joint Session of Congress formal declaration of war on the Empire of Japan Germany declared war Tripartite Pact Italy declaration of war against Germany United States
The day after the attack, Roosevelt delivered his famous Day of Infamy speech to a Joint Session of Congress, calling for a formal declaration of war on the Empire of Japan. Congress obliged his request less than an hour later. On December 11, Germany and Italy declared war on the United States, even though the Tripartite Pact did not require it. Congress issued a declaration of war against Germany and Italy later that same day.
