Personally, I don't think that we, the United States, should have ever sent our troops to Iraq. In a conflict such as this, we have Black Ops, Seal Teams, Rangers (Air Force & Army), and NSA/CIA operatives & Field Agents and other "mercenary militia" groups.
These agencies/outfits/units are used to neutralize any threats to our overseas interests, US citizens living abroad, and the new "it" phrase...Homeland.
atp