Writ else where:
You can't ensure that attacks like 9/11 won't ever happen again using either approach. Can you? Just asking.
In a free and open society there is no defense against random acts of violence. That is part of the cost of freedom. Each ounce of security bought is paid for by an equal ounce of freedom sacrificed. There is a basic truth to the line "home of the brave, land of the free"...to be free one must be brave. To stoop to acts of torture to gain security is the act of cowards. World wide awareness that America tortured people did not elevate their opinion of us as a brave people. It made us look erratic, hypocritical and desperately fearful. Our greatest strength is in our ideals and the tenacious courage to stand by them even in times of greatest duress.