John Conger is a senior adviser to the CSIS International Security Program. Mr. Conger previously served in the Department of Defense (DoD) as principal deputy under secretary (comptroller), a Senate-confirmed position with responsibility for all budgetary and financial matters in DoD, including the development, defense, and execution of the department’s annual budget and overseeing the department’s efforts to achieve audit readiness. He previously performed the duties of the assistant secretary of defense (energy, installations, and environment) and was acting deputy under secretary of defense (installations and environment), overseeing base realignment and closure; management of more than 500 installations, 500,000 buildings, and 28 million acres; DoD’s climate change efforts; operational and facility energy policy; and environmental compliance, conservation, and clean-up programs. Prior to his appointment in DoD, Mr. Conger served in several staff positions in the U.S. House of Representatives. He holds a B.S. and an M.S. in aeronautics and astronautics from the Massachusetts Institute of Technology and an M.A. in science, technology, and public policy from the George Washington University.