The top Bush administration official in charge of deciding whether to bring Guantanamo Bay detainees to trial has concluded that the U.S. military tortured a Saudi national ... interrogating him with techniques that included sustained isolation, sleep deprivation, nudity and prolonged exposure to cold, leaving him in a life-threatening condition." "We tortured [Mohammed al-]Qahtani," said Susan J. Crawford, in her first interview since being named convening authority of military commissions by Defense Secretary Robert M. Gates in February 2007. "His treatment met the legal definition of torture. And that's why I did not refer the case" for prosecution. Military prosecutors said in November that they would seek to refile charges against Qahtani, 30, based on subsequent interrogations that did not employ harsh techniques. But Crawford, who dismissed war crimes charges against him in May 2008, said in the interview that she would not allow the prosecution to go forward. The interrogation ... was so intense that Qahtani had to be hospitalized twice at Guantanamo with bradycardia, a condition in which the heart rate falls below 60 beats a minute and which in extreme cases can lead to heart failure and death. At one point Qahtani's heart rate dropped to 35 beats per minute, the record shows.