A newly released government document suggests officials at Guantanamo tortured a Yemeni man at the prison by depriving him of sleep for fifty days. Lawyers for Salim Hamdan had previously alleged that Hamdan was beaten and abused, but they said sleep deprivation for fifty days, if proved, would be among the worst abuse he suffered at the hands of his American captors. Hamdan, who was once Osama bin Laden’s driver, is scheduled go before a military tribunal next week.