General David Petraeus rose the ranks to four-star general in the U.S. Army and led the CIA during his four-decade career in public service.

He joined host Andrew Kaufmann and the George W. Bush Institute’s Jason Galui to discuss his new book, “Conflict: The Evolution of Warfare from 1945 to Ukraine.” He talked about his time serving our country and protecting our nation’s secrets as well as the lessons he’s learned as a leader during some of our country’s most crucial moments.

Hear more from General Petraeus on this episode of The Strategerist, presented by the George W. Bush Presidential Center.