President Truman's relief of General Douglas MacArthur purposes is [just temporarily] allied with Soviet Russia." If MacArthur's thesis was accepted, then it followed that expanding the war with China would not provoke a conflict with the Soviet Union. The Joint Chiefs emphatically disagreed, although this contradicted their position that it was Europe and not Asia that was the prime concern of the Soviet Union. Even among Republicans, there was little support for MacArthur's position. On 5 April, Martin read the text of a letter he had received from MacArthur, dated 20 March, criticizing the Truman administration's priorities on the floor of the House. In it, MacArthur had
President Truman's relief of General Douglas MacArthur as Operation Rugged, and pressed MacArthur for permission to launch it. On 15 March 1951, the day after Seoul had been recaptured a second time, Truman had responded to a reporter's question about whether UN forces would again be allowed to move north of the 38th Parallel by saying that it would be "a tactical matter for the field commander". MacArthur thereupon gave Ridgway permission to launch his attack, setting an objective line north of the 38th Parallel that would secure Seoul's water supply. He did so without consulting with Washington until after the attack began on 5 April 1951.