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 written: MacArthur later wrote that Martin had released the letter "for some unexplained reason and without consulting me", but it had not been marked as being confidential or off the record. The practice of intercepting and decrypting diplomatic messages of friend and foe alike was a closely held secret in the 1950s. In mid-March 1951, Truman learned through such intercepts that MacArthur had conversations with diplomats in Spain's and Portugal's Tokyo embassies. In these talks, MacArthur had expressed confidence that he would succeed in expanding the Korean War into a major conflict resulting in the permanent disposal of the "Chinese