H. R. McMaster, a former national security advisor and a retired US Army lieutenant general, is the Fouad and Michelle Ajami Senior Fellow at Stanford University’s Hoover Institution and a lecturer at the Stanford Graduate School of Business. He received a PhD in Military History from the University of North Carolina at Chapel Hill. He is the author of the best-selling books Battlegrounds: The Fight to Defend the Free Worldand Dereliction of Duty: Lyndon Johnson, Robert McNamara, the Joint Chiefs of Staff, and the Lies That Led to Vietnam.