Office Home Office Home Key Topics HomeBureaus & Offices > Bureau of International Security and Nonproliferation ...Office of Weapons of Mass Destruction Terrorism hide Office of Weapons of Mass Destruction Terrorism Our Mission To counter the threat of terrorists acquiring and/or using a weapon of mass destruction, WMDT works with foreign partners to establish, strengthen, and maintain their capabilities to deter, detect, defeat, and respond to terrorist attempts to acquire or use chemical, biological, radioactive, or nuclear materials.