"It may well be that, in spite of our best efforts, the Communists may spread the war. But it would be wrong-tragically wrong-for us to take the initiative in extending the war. The dangers are great. Make no mistake about it. Behind the North Koreans and Chinese Communists in the front lines stand additional millions of Chinese soldiers. And behind the Chinese stand the tank, the planes, the submarines, the soldiers, and the scheming rulers of the Soviet Union. Our aim is to avoid the spread of the conflict."