HomeBureaus & Offices > Bureau of Arms Control, Deterrence, and Stability ...Office of Multilateral and Nuclear Affairs hide Office of Multilateral and Nuclear Affairs Our Mission The Office of Multilateral and Nuclear Affairs leads efforts to develop and implement U.S. policy and participation in multilateral nuclear arms control and disarmament agreements, commitments, and multilateral bodies. These efforts advance U.S. security interests, embody U.S. leadership in UN and other multilateral structures, and preserve and strengthen the multilateral disarmament machinery.