Ireland-the people in Guantanamo aren't members of terrorist cells. Most likely, the people in a cell will not know enough to compromise another cell if their capture is known; that's the point of a cell setup. Torture is notoriously unreliable; most people will tell their interrogators what they want to hear, regardless of the truth. Most importantly, if the government can torture a suspected terrorist, what stops them from carrying the principle on to material witnesses who don't want to talk?