Iosif Vissarionovich Stalin (1878-1953) premier of the Soviet state (1941-53), Franklin Delano Roosevelt (1882-1945) 32nd president of the United States (1933-45), Sir Winston Leonard Spencer Churchill (1874-1965) author, orator and British prime minister (1940-45, 1951-55) at the Tehran Conference, 28th November-1st December 1943.