Tehran Conference, November-December 1943. The strategy meeting of Premier Joseph Stalin, President Franklin D. Roosevelt, and Prime Minister Winston Churchill at the Russian Embassy at Tehran, Iran. This conference was the first of “Big Three” leaders (Soviet Union, United States and United Kingdom). Note, all the reporters and staff not usually seen. U.S. Army photograph from the collection of the Office of War Information. Courtesy of the Library of Congress. (2016/01/15).