The CIA inspector general in 2004 found no conclusive proof that "interrogation techniques" helped thwart any "specific imminent attacks," according to recently declassified Justice Department memos.

http://www.mcclatchydc.com/227/story/66895.html

"There was no actionable intelligence gained from using enhanced interrogation techniques on Abu Zubaydah that wasn’t, or couldn’t have been, gained from regular tactics. In addition, I saw that using these alternative methods on other terrorists backfired on more than a few occasions — all of which are still classified. The short sightedness behind the use of these techniques ignored the unreliability of the methods, the nature of the threat, the mentality and modus operandi of the terrorists, and due process."

"One of the most striking parts of the memos is the false premises on which they are based.It was the right decision to release these memos, as we need the truth to come out. This should not be a partisan matter, because it is in our national security interest to regain our position as the world’s foremost defenders of human rights. Just as important, releasing these memos enables us to begin the tricky process of finally bringing these terrorists to justice."

http://www.nytimes.com/2009/04/23/opinion/23soufan.html?_r=3&partner=rss&emc=rss