1977, BA in Political Science and International Studies, Yonsei Univ., Korea. 1981, MA in Communication, Univ. of Massachusetts, USA; 1984, PhD in Communication, Univ. of Massachusetts, USA. Dec. 1976, Producer, English Service Division, Radio Korea, Korean Broadcasting System; Sep. 1983, Associate Professor, Department of Communications, Cleveland State Univ., USA; Jun. 1990, Secretary for International Relations, Office of the Speakers, National Assembly; Mar. 1994, Associate Professor, Department of English Language and Literature, Sejong Univ.; Feb. 1999, Senior Adviser and Principal Speechwriter to the Foreign Minister and Principal Interpreter to the President of Korea; Aug. 2004, Minister, Permanent Mission of Korea to the United Nations; Jul. 2005, Director-General, International Organizations, MOFAT; Oct. 2006, Ambassador-at-Large for Global Affairs, MOFAT; Jan. 2007, Deputy High Commissioner, Office of the United Nations High Commissioner for Human Rights; Apr. 2013, Deputy Emergency Relief Coordinator and Assistant Secretary-General, United Nations Office for the Coordination of Humanitarian Affairs; Oct. 2016, Chief, Transition Team of the 9th United Nations Secretary-General (Under-Secretary-General). Since June 2017, Minister of Foreign Affairs.