Thomas G. DiNanno
PEPUnder Secretary (T) - Under Secretary for Arms Control and International Security since 10 Oct 2025.
Summary
The Honorable Thomas G. DiNanno was sworn in as the 19th Under Secretary of State for Arms Control and International Security on October 10, 2025. Under Secretary DiNanno previously served in the U.S. Department of State as the Deputy Assistant Secretary and as the Senior Bureau Official in the Arms Control, Verification and Compliance Bureau (AVC) where [...More on linked State Dept page]
Positions held1
Since 10 Oct 2025
Under Secretary (T) - Under Secretary for Arms Control and International Security
CurrentUnited States
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