see more

The lectern stands empty as reporters await the arrival of Director of Central Intelligence Agency John Brennan for a press conference at CIA headquarters in Langley, Virginia, December 11, 2014. The head of the Central Intelligence Agency acknowledged Thursday some agency interrogators used "abhorrent" unauthorized techniques in questioning terrorism suspects after the 9/11 attacks. CIA director John Brennan said there was no way to determine whether the methods used produced useful intelligence, but he strongly denied the CIA misled the public. AFP PHOTO/JIM WATSON / AFP / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)

The lectern stands empty as reporters await the arrival of Director of Central Intelligence Agency John Brennan for a press conference at CIA headquarters in Langley, Virginia, December 11, 2014.   The head of the Central Intelligence Agency acknowledged Thursday some agency interrogators used "abhorrent" unauthorized techniques in questioning terrorism suspects after the 9/11 attacks. CIA director John Brennan said there was no way to determine whether the methods used produced useful intelligence, but he strongly denied the CIA misled the public. AFP PHOTO/JIM WATSON / AFP / JIM WATSON        (Photo credit should read JIM WATSON/AFP/Getty Images)