Professional information about senior Defense Department officials.

Derek (Dirk) Maurer

Deputy Assistant Secretary of Defense for Countering Weapons of Mass Destruction

Mr. Derek “Dirk” Maurer currently serves as the Deputy Assistant Secretary of Defense for Countering Weapons of Mass Destruction, Office of the Undersecretary of Defense for Policy (DASD/C-WMD). In this capacity, he is responsible for establishing policy and guidance to protect U.S. and Allied forces against chemical, biological, radiological, or nuclear attack from state or terrorist actors, as well as for preventing and countering global trafficking in WMD. Mr. Maurer is responsible for policies aimed at helping partner countries build capacity in WMD defense and countermeasures. He also represents the Department’s interests on counter proliferation and non-proliferation policy issues, including the Biological Weapons Convention, Chemical Weapons Convention, Nuclear Non-Proliferation Treaty, as well as on the Cooperative Threat Reduction Program and relevant United Nations Security Council Resolutions.

Prior to leading CWMD, Mr. Maurer served as Confirmations Lead at the Department of Defense, where he was responsible for overseeing the confirmation of all Senate-confirmed personnel. Prior to that, he also worked confirmations on the Presidential Transition team. 

Mr. Maurer previously served as Deputy Assistant Secretary of Defense for Crisis Management and Mission Assurance in the George W. Bush administration. In this position, he was responsible for policy oversight of DoD continuity, crisis management, critical infrastructure protection, domestic anti-terrorism/force protection, cyber security, and defense support of civil authorities programs. 

Mr. Maurer has served on the Senate Armed Services Committee, the Senate Homeland Security and Governmental Affairs Committee and the House Committee on Homeland Security. He also served in the personal offices of Senators Kay Bailey Hutchison (R-TX), Susan Collins (R-ME), and Jim Bunning (R-KY). 

Mr. Maurer retired from the Marine Corps Reserve after twenty years, having served in both Operations Desert Storm and Iraqi Freedom.

He received a bachelor’s degree from the University of Washington and a Juris Doctorate from Georgetown University Law Center and is a member of the Virginia Bar.