1977, BA. Pusan National University, Korea; 1994, Master's in International Affairs, School of International and Public Affairs, Columbia University, New York. With Ministry of Foreign Trade: 1998-99, Deputy Director General for International Economic Cooperation, in charge of science and environmental affairs; 2001-02, Assistant to Minister of Foreign Affairs and Trade; 2002-03, Director General for International Organizations; 2005-06, Deputy Minister for Policy Planning and International Organizations. 1999-2001, Director General for International Cooperation, Office of the Light Water Reactor Project, ROK Inter-Agency Task Force for Oversight of the Korean Peninsula Energy Development Organization; 2003-05, Ambassador, Deputy Permanent Representative of Korea to UN; since 2006, current position. 2003, Chairman, Nuclear Suppliers Group; 2004, Member, UN Missile Panel.