"On December 7, 1941, two hours after the Japanese attack on American military installations at Pearl Harbor, Hawaii, Japan declared war on the United States and Great Britain, marking America’s entry into World War II. The Japanese government had originally intended to deliver the declaration thirty minutes before the attack, but the Japanese embassy in Washington took too long to decode the 5,000-word document."
"The German declaration of war against the United States on Dec. 11, 1941, four days after the Japanese attack on Pearl Harbor, on Dec. 7, 1941, was a turning point in the history of World War II, and thus in the history of international relations. "