I would be happy to. "Because everybody else is doing it", is not exactly the most convincing of arguments.
treaties work in both directions
Hardly a justification for cooperating with torturers, more of an excuse.
Will you kindly stop referring to the United States as a whole as "torturers"? Not everyone here agrees with our government's use of torture and there is a continuing debate going on here on its usefulness and the need to prevent further abuses.