“Over the past 50 years, ACA has contributed to bridging diversity, equity, inclusion and that's by ensuring that women of color are elevated in this space.”
Thomas Countryman, Board Chairman
Mr. Countryman was the acting undersecretary of state for arms control and international security. He served for 35 years as a member of the U.S. Foreign Service until January 2017, achieving the rank of minister-counselor, and was appointed in October 2016 to the position of acting undersecretary of state. He simultaneously served as assistant secretary of state for international security and nonproliferation, a position he had held since September 2011.
Contact Information:
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Recent Publications and Citations
https://www.armscontrol.org/media-citations/politico/2025-06-30
June 30, 2025
https://www.armscontrol.org/pressroom/2025-06/trump-decision-strike-iran-sets-us-wider-war-and-undermines-nonproliferation
June 21, 2025
https://www.armscontrol.org/pressroom/2025-06/us-involvement-israels-attack-iran-would-set-back-us-and-global-security-and
U.S. Involvement in Israel's Attack on Iran Would Set Back U.S. and Global Security and Increase the Risk of Nuclear Proliferation
June 18, 2025
https://www.armscontrol.org/pressroom/2025-06/israels-illegal-counterproductive-attacks-make-nuclear-armed-iran-more-likely
June 13, 2025
https://www.armscontrol.org/media-citations/los-angeles-times/2025-03-26
March 26, 2025