As Andrew Sullivan notes, this seems to be the U.S. stance:
Does anyone believe that if Iran, say, captured an American soldier, kept him awake for eleven days straight, bashed his head and body against plywood walls with a towel around his neck, forced him to stand and sit in stress positions finessed by the Communist Chinese, stuck him in a dark coffin for hours, and then waterboarded him, that the NYT would describe him as a victim of "harsh interrogation techniques"? Do you think Mike Allen would give anonymity to a top Iranian official who defended these techniques as vital to Iran's national security?
The last seven years have revealed that almost the entire American establishment views itself as immune to the moral and ethical rules it applies to every other country in the world. Now we know, at least. And you can be sure they will protecting each other to the bitter end.