CIA chief admits agency used 'abhorrent' methods on detainees

By Mark Hosenball LANGLEY, Va. (Reuters) - CIA Director John Brennan said on Thursday some agency officers used "abhorrent" methods on detainees captured following the Sept. 11 attacks and said it was "unknowable" whether so-called enhanced interrogation techniques yielded useful intelligence. With his agency under fire in the aftermath of a U.S. Senate report detailing the CIA's use of torture on detainees after the attacks, Brennan rejected the report's conclusion