, United States (USA) (American Colonies)
1941 - December 8 - WWII: President of the United States Franklin D. Roosevelt delivers his "Infamy Speech"

On December 8, 1941, President Franklin D. Roosevelt addressed a Joint Session of the United States Congress in what would become one of the most famous speeches in American history: the “Infamy Speech.” Delivered at 12:30 p.m. EST, just one day after the Japanese attack on Pearl Harbor, Roosevelt’s words were broadcast live over all four major national radio networks, reaching an unprecedented audience—over 81% of American households tuned in to hear the president respond to the shock of the attack.

In his address, Roosevelt described December 7, 1941, as “a date which will live in infamy,” framing the Japanese assault as a deliberate and treacherous act against the United States. He detailed the scope of the attack and appealed to Congress for immediate action, calling for a declaration of war. The response was swift: within an hour, Congress voted overwhelmingly to authorize military action against Japan, and Roosevelt signed the declaration at 4:10 p.m., officially bringing the United States into World War II.

The “Infamy Speech” not only galvanized the American public but also set the tone for the nation’s wartime mobilization. Roosevelt’s rhetoric combined moral clarity with urgent resolve, uniting a shocked nation behind the war effort. The speech became a defining moment in presidential communication and is remembered as a masterful example of leadership during a crisis, marking the United States’ entry into a global conflict that would reshape the 20th century.

December 8, 1941

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