If anything islamic countries never lack, its hierarchy. Endless, suffocating hierarchy, with all levels frozen in fear of the higher echelons. Then there is the clan-element. Certain families, have certain generals, whos underlings are of the same family, all the way down.
One has to abandon the view that what represents to the media as a modern state, with modern institution is actually a state. What you have is several, small states, city-kingdoms basically, ruled by one clan. Connected to one another in a tangle of agreements and contracts. Once you come to this point, you start to understand the structure of the thing and also why it is hard to decapitate.