Muqtada leads the only real mass movement in Iraq. It's a mass movement of the Shia, who are 60 percent of the population, and of poor Shia - and most Shia are poor. Otherwise the place is full of sort of self-declared leaders, many of whom spend most of their time outside Iraq.

In 2014, everybody kind of knows that the Iraqi army fled when it was attacked by ISIS. But actually, the Kurdish Peshmerga, although they had a better reputation, fled even faster, about a month later, when they were attacked.

Everything that happens in Iraq affects countries outside.

There are sort of Kurdish districts there in Mosul, or there used to be, but the Kurds mostly fled or were driven out. The same is true of the Christians.

There's a lot of expectation in the Middle East that post-Obama there will be a sort of tougher U.S. line on Assad, there will be more intervention and so forth. But I don't know if that's going to be fulfilled. If there is more intervention, then I think it's going to go the same way as these other interventions that we've seen in Iraq, we've seen, to a degree, in Syria, we've seen in Libya, you know, that they do really badly. They make bad situations worse.

Muqtada is radical in the sense that he wants the U.S. occupation to end and has always said so from the beginning. Secondly, his support among the Shia really runs along class lines; it's mainly the poor who support him. His organization runs an enormous social network.

There are some things that could hold it together, notably oil revenues. But at the moment, the much vaunted surge has had a measure of success primarily, to my mind, because Sunni and Shia Iraqis hate and fear each other more these days than they hate and fear the Americans.