This paper discusses an anomaly: the United Nations Command in Korea - an international armed force established in 1950 by U.N. member states. Originally, designed to restore international peace and security in Korea, it has recently been questioned by the world organization that gave it life. The author reviews the culmination of events that resulted in the UNC's creation and its continuing viability as an international peace keeping tool.
Samuel Pollack, Self Doubts on Approaching Forty: The United Nations' Oldest and Only Collective Security Enforcement Army, the United Nations Command in Korea, 6 Penn St. Int'l L. Rev. 1 (1987).