John Kiriakou looked up from his desk at CIA headquarters and was stunned to see The Washington Post investigative reporter, Bob Woodward, walking through the secure area without an agency escort. On another occasion, Kiriakou—who rose at the CIA to become executive assistant to the deputy in charge of operations, the spy agency’s dark activities—saw CNN host Wolf Blitzer wandering unattended through the same area, despite the CIA’s ban on communicating with the media. “We like to think there’s a Chinese wall between the CIA, especially senior CIA officials, and the American media,” Kiriakou recently told the London Real podcast....