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.
We can guess that the unacceptable conduct of the soldiers at Abu Ghraib resulted in part from the dangerous state of affairs on the ground in a theater of war.
This means that the U.S. can pursue different interrogation policies in each location. In fact, Abu Ghraib highlights the benefits of Guantanamo.