Winston Churchill (1870s-1965) was the Prime Minister of the United Kingdom during World War II, replacing Neville Chamberlain. Churchill was educated at Harrow, and became a journalist. After the covering a war in Sudan, Churchill became a politician. Churchill was originally a member of the Liberal Party, but later joined the Conservative Party. Churchill was First Lord of the Admiralty during World War I; it was in this capacity that he organized the Gallipoli Campaign. Churchill fell out of favor in the 1920s, but returned to the spotlight in the 1930s as a critic of Neville Chamberlain's policy of appeasement. Churchill was elected Prime Minister in 1940. Churchill's steely resolve and eloquent speeches kept up Britain's spirits during the dark days of the Battle of Britain and the Blitz. Churchill collaborated with the U.S. President Franklin D. Roosevelt and the Soviet leader Joseph Stalin at the Casablanca and Yalta conferences. Churchill was voted out of office in favor of Clement Attlee a few months after the end of the war in Europe. He is one of the few people to be Honorary Citizens of the United States.