The Iranian diplomat that the U.S. released claims he was tortured. That may or may not be true. What's important is that the claim of torture is so believable to the rest of the world. Our actions as a nation in this Global War on Terror have so besmirched our standing and credibility that any spurious claim will now be given a stage.
Thanks Rumsfeld. Thanks Bush. Thanks Guantanamo, and all the faceless bureaucrats that allowed it to happen.