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.

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.

You know, if you want to meet a lot of Iraqi leaders, the best places are the hotels in Amman or in London. In general the government here is amazingly unpopular.

Despite the fact that there's billions of dollars sitting in the Iraqi government reserves, somehow they are incapable of getting it out to the people. There are a very large number of people here who are on the edge of starvation. For those sort of people - a sizable chunk of people - that service makes them regard Muqtada as a sort of god.

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.

It's always sort of amazing, sitting in Baghdad, to watch visiting dignitaries being received in the Green Zone by politicians who have usually very little support and seldom go outside the Green Zone.

Muqtada belongs to the most famous religious family in Iraq, which is the al-Sadr family. He's really the third in line. [Muqtada's father] drew his power from the first really important al-Sadr, Muhammad Baqir, who was executed by Saddam in 1980, together with his sister. So it's really a family of martyrs, and that's why Muqtada suddenly emerged from nowhere with the fall of Saddam.