 At that time in Iraq, there was also quite a lot of sectarian grievances present, which also had a compounding factor in this. But some of these things, again, might have been picked up by intelligence services, but I'm not aware of anyone who had a full grasp of what possibly could have emerged in a caliphate that came to be the size of Britain and rule over a population of multiple millions of civilians in Iraq and Syria. Ten years on, Colin, what is going on in the areas where IS used to rule?