Member of South Africa’s delegation to the 1995 NPT review conference.

Ambassador for Disarmament Affairs and Deputy Permanent Representative of the People’s Republic of China to the United Nations Office at Geneva.

Deputy head of the nuclear non-proliferation section of the economic department in the German Federal Foreign Office.

Senior Advisor for Non-proliferation and Deputy Director of the Non-proliferation, Arms Control and Disarmament Division of the Canadian Department of Foreign Affairs.