BAGHDAD, IRAQ - AUGUST 28:  U.S. Army 2175th Military Police Company Specialist Michael Petty (R), from Park Hills, Montana, provides perimeter security during a joint U.S. Army - Iraqi police operation to arrest a group of suspected kidnappers in a suburban neighborhood in Baghdad, Iraq.  U.S. State Department officials have said that the U.S. is considering allowing a multi-national United Nations force into Iraq, but said any such force would have to be under the command of an American commander.  (Photo by Scott Nelson/Getty Images)