Political and military leaders attend the Tehran Conference during World War II, December 1943. From left to right, (seated), Joseph Stalin, Franklin D. Roosevelt and Winston Churchill. Behind them are (left to right, front row) Field Marshal Sir John Dill, General Marshal Kliment Voroshilov, General Sir Alan Brooke and Admiral William D. Leahy. General Henry H. Arnold and Admiral Andrew Cunningham are at the back. (Photo by Archive Photos/Getty Images)