The air war against the Islamic State was critical to the territorial defeat of the group's territorial caliphate and a key enabler of American partner operation led ground combat. To discuss the air war, Aaron spoke this week with Stacie L. Pettyjohn, director of the Strategy and Doctrine Program of RAND Project AIR FORCE, and Becca Wasser, a fellow in the Defense Program at the Center for a New American Security, about their recent multi-authored book, The Role of U.S. Airpower in Defeating ISIS.

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