Bureau of International Security and Nonproliferation
Our Mission
Preventing the spread of WMD, delivery systems, and advanced conventional weapons capabilities — and rolling back such proliferation where it has already taken root — is the mission of the Bureau of International Security and Nonproliferation (ISN). In close collaboration with other bureaus within the State Department, other U.S. agencies, and a diverse range of international and non-governmental partners, ISN tracks, develops, and implements effective responses to proliferation threats and shapes the international security environment to prevent their recurrence.
The Latest
The Destructive Record of Iranian Arms
Executive Order 13949, signed by President Trump on September 21, 2020, provides the Secretary of State and the Secretary of Treasury with sanctions authorities to respond to Iran's dangerous and reckless conventional arms activities.
Slideshow
Offices
- Office of Congressional and Public Affairs
- Office of Conventional Arms Threat Reduction
- Office of Cooperative Threat Reduction
- Office of Counterproliferation Initiatives
- Office of Export Control Cooperation
- Office of Missile, Biological, and Chemical Nonproliferation
- Office of Multilateral Nuclear and Security Affairs
- Office of Nuclear Energy, Safety, and Security
- Office of Regional Affairs
- Office of the Biological Policy Staff
- Office of the Nonproliferation and Disarmament Fund
- Office of Weapons of Mass Destruction Terrorism