In that case, the cost-benefit evaluation of torture is trivial: it has certain costs, such as inflaming antipathy to the U.S., and no benefits.
Maybe he was in a hurry, or maybe, once he had made a credible argument that torture has no benefits, he didn't need to list other costs. Still, to my mind, he should have mentioned one major cost of torture that, in his analysis, goes unmentioned. What is it?
HINT: My co-blogger, Bryan Caplan, who is one of least nationalistic people I know, would never have left out this cost.