School of War

‘We Are Going to War’: H.R. McMaster Remembers 9/11

September 11, 2026·56 min
Episode Description from the Publisher

Lieutenant General H.R. McMaster was on the phone with the Pentagon when the plane struck the building on September 11, 2001. “I thought, Okay, we are going to war,” he recalls. Twenty-five years after 9/11, McMaster joins Aaron MacLean to discuss the wars that followed. Drawing on his experience as a wartime commander and national security adviser, McMaster explains why he considers Afghanistan a self-defeat, how American withdrawal helped enable the rise of ISIS in Iraq, and why he thinks the latest Iran ceasefire was “a big mistake.” 4:39 McMaster on 9/11 7:27 Adapting to Iraq 12:33 Lessons From Iraq 15:13 Counterinsurgency’s Legacy 21:19 The Post-9/11 Wars 23:23 Afghanistan’s “Self-Defeat” 25:07 When America Leaves 29:53 Sustaining Afghanistan 32:14 Defending the Afghan Mission 35:37 The Axis of Aggressors 44:41 Trump’s Messaging About the War 49:07 Politics in the Military This episode of School of War is brought to you by Maven Smart System, the builder platform for the American warfighter, fielded across the force and live on the frontline today. Learn more at palantir.com. This episode of School of War is also brought to you by Stratolaunch, a leading pure-play hypersonics company. Stratolaunch helps the U.S. and its allies move new hypersonic technologies from concept to capability, faster and cheaper. Learn more about how Stratolaunch is accelerating the future of hypersonics at Stratolaunch.com. Learn more about your ad choices. Visit megaphone.fm/adchoices

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