They kill or drive out police and security forces, controlling gas stations and other points of need for citizens
Another facet of the mideast is the Civilized Western lifestyle vs the pig lifestyle.
In those areas, one can offer a choice to the locals who have occupied the region for millennia, would you like for us to rebuild your society, so you can live free, with liberty and justice, as has matured in western civilization,....OR,...do you prefer to live like a pig?
Many will prefer the pig option, if for no other reason than to NOT live like a civilized westerner.