Watch Clip
A Tribute to Michael Sullivan
10m 40s
He was one of the guiding figures of FRONTLINE for more than two decades.
FRONTLINE explores and illuminates the critical issues of our times - from business and health to social issues, politics and war.
Video description: Al Qaeda operative Abu Zubaydah was captured in Pakistan in March 2002. FBI Agent Ali Soufan tells FRONTLINE he was able to convince Zubaydah to give up significant details about Al Qaeda plots. But, he says, cooperation dried up once the CIA stepped in with new "enhanced interrogation techniques."
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