61 2 6261 1111 R G Casey Building, John McEwen Crescent, Barton ACT 0221 Sections Ambassador for Arms Control and Counter ProliferationCounter-Terrorism BranchArms Control and Counter Proliferation BranchAmbassador for Cyber Affairs and Critical TechnologyCyber Affairs and Critical Technology BranchCounter Modern Slavery People Smuggling and Transnational Crime BranchNuclear Non-Proliferation and Disarmament Branch Key People First Assistant Secretary Mr. Mathew Fox 61 2 6261 1111 mathew.fox@dfat.gov.au Canberra Phone 61 2 6261 1111 Canberra Fax 61 2 6261 3111 Last updated: 21 April 2026
First Assistant Secretary Mr. Mathew Fox 61 2 6261 1111 mathew.fox@dfat.gov.au Canberra Phone 61 2 6261 1111 Canberra Fax 61 2 6261 3111