Michael O'Hanlon is a senior fellow in Foreign Policy at the Brookings Institution, where he specializes in U.S. defense strategy, the use of military force, and American national security policy. He co-directs the Center on 21st Century Security and Intelligence there with retired General John Allen. O'Hanlon is also director of research for the Foreign Policy program at Brookings. He is an adjunct professor at Columbia, Princeton, and Syracuse universities and University of Denver.