Will the US Use the Atom Bomb in Manchuria Depend on Action in the United Nations?

In 1950, during the Korean War, Truman was asked at a press conference whether the US would use the atomic bomb in Korea. In 1951, as a flex of the decider's power, Harry Truman fired General Douglas MacArthur for publicly urging the president to escalate the war. The conventional story is that in 1953, Truman merely passed the nuclear and cold war baton to Eisenhower.