Director, Center for the Promotion of Disarmament and Non-proliferation (CPDNP), Japan Institute of International Affairs (JIIA)

Former U.N. Under-Secretary-General for Disarmament Affairs (2003-06), Ambassador of Japan to the IAEA and other international organizations in Vienna (1999-2001), Saudi Arabia (01-03) and Switzerland (06-08), Director-General for Arms Control and Science Affairs, Foreign Ministry of Japan (1997-99). Member, Advisory Board, International Commission on Nuclear Nonproliferation and Disarmament (ICNND) (2008-10), U.N. Secretary-General’s Advisory Board on Disarmament Matters (2008-12). Current Membership: Advisory Board, Geneva Centre for Security Policy (GCSP); United Nations University Council; Board, World Institute for Nuclear Security (WINS); Asia-Pacific Leadership Network for Nuclear Non-proliferation and Disarmament (APLN); International Institute for Security Studies (IISS). Visiting Professor, Akita International University. Also teaches at International Christian University, Tokyo.