In this episode of Horns of a Dilemma, we hear from Elbridge Colby, co-founder of the Marathon Initiative, former deputy assistant secretary of defense, and author of The Strategy of Denial: American Defense in an Age of Great Power Competition. Colby makes the case for a U.S. defense strategy focused on preventing Chinese hegemony in Asia by denying the Chinese the ability to achieve faits d'accompli--completed acts that violate the security and sovereignty of American's allies and partners in Asia, thereby threatening the defensive perimeter critical to protecting American interests. Colby's was the principal author of the 2018 National Defense Strategy, and his work continues to influence the formulation of strategy today. This event was hosted at the Clements Center at the University of Texas, Austin, and is introduced by Professor Will Inboden, executive director of the Clements Center.