Minister, Mission of Representative of Korea, New York, Permanent Mission of the Representative of Korea since 1989. Rch Commissioner, Institute of Foreign Affairs & National Sec, Ministry of Foreign Affairs, Korea, 1985-1988. Secretary (Coord for Ministry of Foreign Affairs & National Unification Board), Office of the President, Korea, 1977-1982.
Division Chief, Office of the South-North Dialogue for South-North Red Cross Conference & SouthNorth Coordinating Committee(s), Korea, 1972-1977. Instructor (Lieutenant), International Relations, Naval Academy, Korea, 1968-1971.