Barry R. Posen is Ford International Professor of Political Science at MIT, Director Emeritus of the MIT Security Studies Program, and serves on the Executive Committee of Seminar XXI (http://semxxi.mit.edu/). He is the author of, Restraint: A New Foundation for U.S. Grand Strategy, (Cornell University Press 2014), Inadvertent Escalation: Conventional War and Nuclear Risks (Cornell University Press 1991), and The Sources of Military Doctrine (Cornell University Press 1984 ). The latter won two awards: The American Political Science Association's Woodrow Wilson Foundation Book Award, and Ohio State University's Edward J. Furniss Jr. Book Award. He is also the author of numerous articles, including "Europe Can Defend Itself," Survival, December 2020, "The Rise of Illiberal Hegemony--Trump's Surprising Grand Strategy," Foreign Affairs, March/April 2018, "It's Time to Make Afghanistan Someone Else's Problem," The Atlantic, 2017, "Contain ISIS," The Atlantic, 2015, “Pull Back: The Case for a Less Activist Foreign Policy,” Foreign Affairs, January/February 2013, and "Command of the Commons: The Military Foundation of U.S. Hegemony," International Security, (Summer, 2003.)