Steven Kosiak is a non-resident fellow at the Quincy Institute and a partner at ISM Strategies in Washington, D.C. He is also a senior adjunct faculty member at American University’s School of International Service (SIS) and an adjunct senior fellow at the Center for a New American Security (CNAS). Prior to joining ISM Strategies in the fall of 2014, he served for five-and-a-half years as the Office of Management and Budget (OMB) associate director for defense and international affairs and the senior White House official for national security and foreign policy budgeting. From 1996–2009 Mr. Kosiak was vice president for budget studies at the Center for Strategic and Budgetary Assessments (CSBA). From 2000–08 he was an adjunct faculty member at Georgetown University’s Security Studies Program.

In recent years, much of his work has focused on the U.S.-Chinese military competition andU.S. defense and international affairs programs and spending. While at CSBA he authored reports and briefing papers on topics ranging from weapons modernization, space programs, force structure, readiness, and military compensation, to the cost of military operations and the implications for national security spending of overall federal budget trends and priorities.

Kosiak holds a J.D. from the Georgetown University Law Center (1998), an M.P.A. from the Princeton School of Public and International Affairs (1986) and a B.A. in history and political science from the University of Minnesota (1982).