O’Neil Hamilton is a non-proliferation/disarmament expert and diplomat with broad experience in chemical and biological threat reduction, supporting strategic trade management and strategic trade control enforcement initiatives in multiple UN Member States in Latin America and the Caribbean, Africa, Southeast Asia, and the Pacific. He has been responsible for several major capacity-building efforts aimed at building national enforcement capacity and improving detection, identification, and interdiction capabilities against CBRN terrorism and facilitating the development of legislative measures to implement UN Security Council Resolution (UNSCR) 1540 and to meet Recommendations 5, 6 & 7 of the Financial Action Task Force (FATF) to prevent terrorism/proliferation financing.

From 2021-2023, he led a global non-proliferation initiative for the United Nations Office on Drugs and Crime (UNODC), focusing on the development and enactment of strategic trade legislation, attendant regulations, and export controls, to prevent the acquisition, manufacture, and use of biological and chemical weapons, and assisted several of these states in implementing the Biological and Chemical Weapons Conventions.

From 1989 to 2021, Mr. Hamilton was the Regional Coordinator for the implementation of UNSCR 1540 in the Caribbean Community (CARICOM) Member States and also served as the Caribbean Focal Point for the United Nations Counter-terrorism Executive Directorate (CTED). An experienced policy analyst and strategist, he has previously served the CARICOM Secretariat and the Government of Jamaica in several capacities and has advised senior government and security officials in UN Member States, in a range of areas related to disarmament, non-proliferation and regional security.