“For 50 years, the Arms Control Association has educated citizens around the world to help create broad support for U.S.-led arms control and nonproliferation achievements.”
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