The problem in Fallujah, and probably this place now, is that we have no hold on the people that take over after our forces leave, so they find it easy to work with the resistance.
I advocate taking the families of these people hostage in order to ensure their loyalty. That is an ancient custom that has worked well in many times and places and would work well here, too, but I guess we're too nice for that.
We can't afford to be nice.
That keeps the locals from joining up with the bad guys. Very, very clever.