Brett McGurk served as Special Presidential Envoy for the Global Coalition to Defeat ISIS at the U.S. Department of State, where he helped build and then lead the coalition of 75 countries and four international organizations in the global campaign against ISIS. He served in senior positions in the Bush and Obama administrations and has led some of the most sensitive diplomatic missions in the Middle East over the last decade. McGurk is currently the Frank E. and Arthur W. Payne distinguished lecturer at the Freeman Spogli Institute and Center for Security and Cooperation at Stanford University.