Trevor Thrall is a senior fellow for the Cato Institute's Defense and Foreign Policy Department, with expertise in international security and the politics of American national security. Thrall is also an associate professor at George Mason University's Schar School of Policy and Government where he teaches courses in international security.

Thrall's research includes work on shifting American attitudes toward foreign policy, the role of arms sales in U.S. foreign policy, and grand strategy. Most recently he is the co-author, with John Glaser and Christopher A. Preble, of Fuel to the Fire: How Trump Made America’s Broken Foreign Policy Even Worse (and How We Can Recover) (Cato Institute, 2019). He also edited, with Ben Friedman, U.S. Grand Strategy in the 21st Century: The Case for Restraint (Routledge, 2018).

Trevor has published articles in a range of academic journals and his shorter commentary on foreign affairs has appeared in a number of publications including the AtlanticWashington PostPhiladelphia InquirerForeign PolicyDetroit NewsHuffington PostWar on the Rocks, and the National Interest.

Thrall is the co-host of the Power Problems podcast, a biweekly podcast which explores key questions in international security with guests from across the political spectrum.

Prior to working at George Mason Thrall taught at the University of Michigan-Dearborn where he directed the MPP and MPA programs. Thrall holds a PhD in political science from M.I.T.