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"Today, the Cold War has disappeared but thousands of those weapons have not. In a strange turn of history, the threat of global nuclear war has gone down, but the risk of a nuclear attack has gone up." —President Barack Obama, April 5, 2009
Under the leadership of Assistant Secretary Thomas M. Countryman, the ISN Bureau comprises the following offices:
Nuclear Affairs (NA), Eliot Kang, DAS
Office of Multilateral Nuclear and Security Affairs (ISN/MNSA)
Office of Nuclear Energy, Safety and Security (ISN/NESS)
Office of Regional Affairs (ISN/RA)
Non-Nuclear and Counter-Proliferation (NNCP), Vann Van Diepen, PDAS
Office of Missile, Biological and Chemical Nonproliferation (ISN/MBC)
Office of Conventional Arms Threat Reduction (ISN/CATR)
Office of Counter-Proliferation Initiatives (ISN/CPI)
Biological Policy Staff (ISN/BPS)
Nonproliferation Programs (NP), Simon Limage, DAS
Office of Cooperative Threat Reduction (ISN/CTR)
Office of Export Control Cooperation (ISN/ECC)
Nonproliferation and Disarmament Fund (ISN/NDF)
Office of Weapons of Mass Destruction Terrorism (ISN/WMDT)
Office of Strategic Communications and Outreach (ISN/SCO)