Korean War By suresh Jul 24, 1945 Korean War Potsdam Conference, President Truman asked USSR help against Japan Aug 6, 1945 Korean War Atomic bomb dropped on Hiroshima Aug 8, 1945 Korean War 120,000 Russian troops invaded Manchuria and Korea Feb 21, 1951 ANZUS TREADY signed United States signed the ANZUS TREADY Jan 1, 1953 SEATO signed SEATO signed