세종연구소 안보전략센터 수석연구위원, 전 세종연구소 연구소장, 전 한국핵정책학회 회장, 전 동아시아연구원 국가안보패널 위원, 전 외교통상부 정책기획관 Principal Fellow, Center of Security Strategy, The Sejong Institute
Former President, The Sejong Institute
Former President, Korea Nuclear Policy Society
Former Member, National Security Panel, East Asia Institute
Former Director-General for Policy Planning, Ministry of Foreign Affairs