Here's a fascinating look at the intermingling of politics and religion in Islam. Iran's President Imajihadi (or whatever his name is) believes that when Islam rules the world, it's center will be at a place called Qom. Seems this doesn't sit well with all Muslims, Shia or Sunni. Or, at least, exactly what the world will look like once that happens is a point of controversy.
It's an interesting read, if only to get a glimpse into the impossible complexity of the whole thing. And, it provides more insight into why Islam remains a threat to the West--and it one want's to be politically correct, the most one could say is "why large sects within Islam remain a threat to the West."