Assistant Secretaries of State for International Security and
Nonproliferation - Principal
Officers - People - Department History
Assistant Secretaries of State for International Security and Nonproliferation
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Updates to the Principal Officers and Chiefs of Mission database are currently suspended. For information about the Department’s current and recent leadership, we recommend visiting the Department of State homepage’s Biographies of Senior Officials and List of U.S. Ambassadors.
Notice posted on January 12, 2024.
Last
updated March 14, 2024.
;The Bureau of International Security and Non-Proliferation formed on July 29, 2005, with the merger of the Bureau of Non-Proliferation and the Bureau of Arms Control.
- John C. Rood (2006–2007)
- Thomas M. Countryman (2011–2017)
- Christopher A. Ford (2018)