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Under Secretary for Arms Control and International Security

Bureau of International Security and Nonproliferation

Our Mission

The Office of Multilateral Nuclear and Security Affairs (ISN/MNSA) leads Department of State formulation and implementation of U.S. policy relating to the global nuclear nonproliferation regime, especially the Treaty on the Non-Proliferation of Nuclear Weapons (NPT), the NPT review process, the International Atomic Energy Agency (IAEA), Nuclear-Weapon-Free-Zone treaties and protocols, and nuclear-related security assurances.

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U.S. Department of State

The Lessons of 1989: Freedom and Our Future