On December 11, 1941, several days after the Japanese attack on Pearl Harbor and the United States declaration of war against the Japanese Empire, Nazi Germany declared war on the United States, in response to what was claimed to be a series of provocations by the United States government when the US was formally neutral during World War II. The decision to declare war was made almost entirely by Adolf Hitler, without consultation. Hitler had received no advance notice from the Japanese about the attack on Pearl Harbor. Although he and his Foreign Minister Ribbentrop had verbally indicated a willingness...