United States of America
The USA was neutral in World War II from 3 September 1939 when Britain and France declared war on Germany in support of Poland until 8 December, 1941 after the attack on Pearl Harbor. President Franklin D. Roosevelt (Roosevelt, Franklin D.) was concerned that Germany should not prevail, but faced a considerable body of opinion within the USA against becoming involved. In the Pacific Japan's imperial expansion was resisted by diplomatic means and with some military gestures involving the Pacific Fleet which were opposed by Admiral James O. Richardson (Richardson, James O.). He was replaced by Admiral Husband E. Kimmel (Kimmel, Husband E.). The attack by the Japanese galvanized America into a complete commitment to winning the war not only against Japan but against Germany also.