Torture does not yield good intelligence ... this has been know for a long time.
"I know from personal experience that the abuse of prisoners will produce more bad than good intelligence. I know that victims of torture will offer intentionally misleading information if they think their captors will believe it. I know they will say whatever they think their torturers want them to say if they believe it will stop their suffering."
McCain added (emphatically) that "the use of torture compromises that which most distinguishes us from our enemies, our belief that all people, even captured enemies, possess basic human rights."
http://www.theatlantic.com/politics...-Senate-Republican-CIA-Torture-Report/383589/