The three leaders at the Potsdam (Berlin) conference of government heads from the major victorious powers in World War II (1939-45), from left: British Prime Minister Winston Churchill, American President Harry Truman, Chairman of GKO, General Secretary of the Central Committee of the CPSU, Chairman of the SNC (since 1946 - SM) of the USSR, Iosif Stalin. The conference was held from July 17 - August 2, 1945 in Potsdam, near Berlin.