“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:
[email protected]
Recent Publications and Citations
https://www.armscontrol.org/blog/2026-02-06/thomas-countryman-new-start-expiry-and-value-arms-control
February 6, 2026
https://www.armscontrol.org/media-citations/sri-lanka-guardian/2026-02-05
February 5, 2026
https://www.armscontrol.org/media-citations/cnn/2026-02-05
February 5, 2026
https://www.armscontrol.org/media-citations/cnn-en-espanol/2026-02-05
Aumentan los temores de una carrera armamentista nuclear después de expirar el tratado entre Estados Unidos y Rusia
February 5, 2026
https://www.armscontrol.org/media-citations/dagens/2026-01-16-0
January 16, 2026