In the fall of 1950, U.S. Secretary of State Dean Acheson stood before the United Nations General Assembly and reminded them that five years earlier, when the U.N. Charter was conceived, it was agreed that the U.N should have a military arm with which to enforce its edicts. He prodded their memories to a further degree when he reminded them that they'd have one today if the Soviet delegates hadn't objected so vociferously.
"Korea has shown how ill prepared the United Nations is to stop aggression. The defense of Korea is nominally a U.N. responsibility. But 98% of the effort, and an equally high percentage of the 'United Nations' casualties, come from the United States."
"The State Department seeks to prevent any such one-sided arrangement in the future. Therefore, Secretary Acheson proposes first an international peace patrol. and second a United Nations army which would be prepared to put down aggressive action before, rather than after, it takes place."