FBI interrogator discusses 9/11 interviews
FBI Agent Ali Soufan discloses details of his interrogation with al Qaeda operative Abu Zubaydah that revealed Khalid Sheikh Muhammed as the planner of the Sept. 11, 2001 attacks.
"Don't play games with me brother, don't play games. You know who this guy [is]," said Zubaydah. "The ... mastermind of the plane operations."