** FILE ** This Oct. 14, 1950, file picture shows Gen. Douglas MacArthur, left, and President Harry Truman in an automobile during a meeting on Wake Island to discuss the Korean War. Truman later told reporters the atomic bombing of North Korea was under consideration. MacArthur had a plan to drop 30 to 50 of the bombs, the general told journalists after the war. Sixty years after the start of the Korean War, recently released declassified documents have helped fill in the history of U.S. nuclear threats against North Korea over the decades. (AP Photo/WA, File)

Photo by: WA

** FILE ** This Oct. 14, 1950, file picture shows Gen. Douglas MacArthur, left, and President Harry Truman in an automobile during a meeting on Wake Island to discuss the Korean War. Truman later told reporters the atomic bombing of North Korea was under consideration. MacArthur had a plan to drop 30 to 50 of the bombs, the general told journalists after the war. Sixty years after the start of the Korean War, recently released declassified documents have helped fill in the history of U.S. nuclear threats against North Korea over the decades. (AP Photo/WA, File)