In reply to Rob Exile Ward:
ISIS does indeed seem to be in a league of their own. I watched their slick 55min propaganda film (The Flames of War) over the weekend - well worth viewing. It does bang on a bit and is reminiscent of propaganda films from the 50s but gives an interesting insight in to the thinking.
What really struck was the apparent belief in what the caliphate would bring - though an imagined and utopian past, where things work, everyone was happy, the infidels crushed, the world cured of all ills, all united under Allah.
It seemed reminiscent of the picture Pol Pot had of the agrarian society the Khmer Rouge would install. It might be entirely well meaning and with the interests of the people at heart. But as its a myth and therefore doomed to failure, and as the regime has no ability to question its founding principles (enshrined as they are in religious text and dogma, that cannot be questioned), the result will almost certainly be an assumption of conspiracies, imposters, spies and with that purges and even greater atrocities.
This is scary given ISIS already looks to have way too much self belief in their actions, justifications and belief, all the while supporting civilian populations may quite justifiably imagine that the caliphate they impose will be a good thing. The room for catastrophe and greater despotism is immense.
This does however mean that the West should tread carefully and we do have to be careful in assuming everyone under the black flag is of the same mindset. The Khmer Rouge are a good comparison. Equally, the Taliban documentary showed that those we label as terrorists can quite easily just be normal people, in many ways very similar to us. The form of Islam they follow is just an overlay on a tribal way of life and society that has served them satisfactorally for millennia, while we might be the invaders.