Nobuyasu Abe is a former UN Under-Secretary-General for Disarmament Affairs (2003-06) and a former Commissioner of the Japan Atomic Energy Commission (2014-17). He was a senior fellow (2018-19) at Harvard Kennedy School with its Project on Managing the Atom of the Belfer Center for Science and International Affairs. He served on the UN Secretary General’s Advisory Board on Disarmament Matters (2008-12) and as Japanese ambassador in Vienna (1999-2001), Riyadh (2001-03) and Bern (2006-08).