The independent resource on global security

Siemon T. Wezeman

Senior Researcher

Siemon T. Wezeman

Siemon Wezeman

Siemon Wezeman is a Senior Researcher with the SIPRI Arms and Military Expenditure Programme. His areas of research include the monitoring of arms transfers, with particular focus on the Asia–Pacific region and North America, and the use of weapons in conflicts. He also researches military technology and transparency in arms transfers. Since 1992 he has worked with the SIPRI Arms Transfers Programme.

Subject expertise

Arms transfers; transparency in arms transfers; military technology; use of arms in conflicts; defence policies; methodology

Phone number
+46 766 286 197
External publications
  • Wezeman, S. T. and Wezeman, P. D., 'Trends in international arms transfers, 2013', SIPRI Fact Sheet, Apr. 2014
  • Wezeman, S. T., 'Military capabilities in the Arctic', SIPRI Background Paper, Mar. 2012
  • Wezeman, S. T., ‘International transfers of combat aircraft, 2005–2009’, SIPRI Fact Sheet, Nov. 2010
  • Wezeman, S. T., ‘The global arms trade after the cold war’, A. T. H. Tan (ed.), The Global Arms Trade: A Handbook (Routledge, 2009)
  • Wezeman, S. T., ‘Arms transfers to Asia and Oceania’, SIPRI Background Paper, Oct. 2009
  • Holtom, P. and Wezeman, S. T., ‘Towards an arms trade treaty’, SIPRI Yearbook 2007: Armaments, Disarmament and International Security (Oxford University Press: Oxford, 2007)