Punishing abuse in Iraq should not return the U.S. to Sept. 10, 2001, in the way it fights al Qaeda, while Osama bin Laden and his top lieutenants remain at large and continue to plan attacks.
Punishing
Doing a thing by law, or according to law, is only carrying the law into execution. And punishing a man by, or according to, the sentence or judgment of his peers, is only carrying that sentence or judgment into execution.