MSNBC - The Roots of Torture: "Toward the end of 2002, orders came down the political chain at DOD that the Geneva Conventions were to be reinterpreted to allow tougher methods of interrogation.... In April 2003, new and tougher interrogation techniques were approved.

...The approach at Gitmo soon reflected these changes. Under the leadership of an aggressive, self-assured major general named Geoffrey Miller, a new set of interrogation rules became doctrine. "