History Cold War Politics and government Heads of state U.S. -- Foreign relations -- Soviet Union Diplomatic history Europe -- Foreign relations -- 1918-1945 Foreign relations Influence Soviet Union Soviet Union -- Foreign relations -- U.S. U.S. -- Foreign relations -- 1945-1989 World War, 1939-1945 World War, 1939-1945 -- Diplomatic history World War, 1939-1945 -- Influence