** FILE ** Gen. David H. Petraeus, the top U.S. and NATO commander in Afghanistan, speaks in September 2010 with Afghan military personnel during a tour of the U.S. run-Parwan detention facility north of Kabul, Afghanistan. (AP Photo)

** FILE ** Gen. David H. Petraeus, the top U.S. and NATO commander in Afghanistan, speaks in September 2010 with Afghan military personnel during a tour of the U.S. run-Parwan detention facility north of Kabul, Afghanistan. (AP Photo)