Michael Hayden, retired United States Air Force four-star general and former director of the National Security Agency, principal deputy director of National Intelligence and director of the Central Intelligence Agency, joins us to discuss his book Playing to the Edge: American Intelligence in the Age of Terror, which gives an inside look at how American Intelligence has responded to terrorism and war amid rapid globalization and advances in technology. Hayden details how following the 9/11 attacks, politicians, military commanders and rulers of other nations navigated surveillance and espionage in Iran, Iraq, North Korea, Syria and Pakistan, among others places.