The Office of Nonproliferation and International Security (NIS) provides technical and policy support to U.S. efforts to implement and improve the international nonproliferation system.  There are three functional offices under NIS and a policy office that coordinates cross-cutting activities. 

Mission
The Office of Nonproliferation and International Security advances U.S. government efforts to combat weapons of mass destruction (WMD) proliferation by:

• Strengthening nonproliferation regimes and arrangements
• Expanding the reach of the nonproliferation regime by promoting foreign compliance export controls, safeguards, and physical protection commitments
• Verifying the elimination of proliferation programs and stockpiles of WMD materials

Internal and External Relationships
NIS represents NNSA and the Department of Energy in many coordinating committees that formulate U.S. nonproliferation policies, initiatives and strategies.  This includes discussions and coordination with the Departments of State, Homeland Security, Justice, Defense, Treasury and Commerce, as well as the National Security Council, Intelligence Community and Congress.  The office’s international work includes providing policy and technical support to nonproliferation negotiations, bilateral programs with foreign governments and collaboration within multilateral organizations, including the International Atomic Energy Agency and the Nuclear Suppliers Group.