The Under Secretary’s office provides policy direction in the areas of nonproliferation, arms control, regional security and defense relations, and export control policy. The office is heavily involved in negotiations, ratifications, and implementations of agreements on strategic, non-conventional and conventional forces. The office is also involved in policy regarding U.S. security commitments worldwide as well as the use of U.S. military forces in unilateral or international peacemaking roles. Bureaus reporting to T include: Arms Control, Verification and Compliance (AVC); International Security and Nonproliferation (ISN); and Political-Military Affairs (PM).