The document summarizes the Japanese attack on Pearl Harbor that occurred on December 7, 1941. It describes the events leading up to the attack, including failed diplomatic negotiations. On the morning of December 7th, Japanese planes launched two waves of aerial attacks on the U.S. naval base at Pearl Harbor, destroying numerous battleships and aircraft. The surprise attack resulted in over 2,300 American casualties and significant damage to the U.S. Pacific fleet anchored at Pearl Harbor.