You’re right about their discipline but you also hit it square on about the atrocities. The city needs to be isolated. Take everything around it. Then let their lack of discipline take hold. Anyone invades and the occupiers will slaughter every last civilian there. Certainly if the attack is carried out by troops not much better than they are like the Iraqi’s and Kurds.
“Anyone invades and the occupiers will slaughter every last civilian there.”
Invasions, especially conducted by pissed off Marines are fast and violent, leaving you without time for projects like that. A better analogy would be SS guards running for their life as the Allied forces approach.
You cant have it both ways, they are an undisciplined rabble. But they could ignore the attacking force and focus enough to start the work of killing the whole city?
Not to mention, invasions are kind of interesting, all turns to chaos.
As the explosions and close air begins, the victims know they salvation is near, they run, they hide, they ignore jihadis instruction, THEY attack, etc etc.
When the invasion switch gets flipped, it wont be a situation where ISIS calls the shot to the same degree they do now. Their days of strutting through town executing on a whim will be measured in minutes.