I think what happened with 9/11 is that people sort of felt that it came from nowhere. Whereas I think now we understand the roots are very deep. I say it's like revolutionary Communism, something that is going to have to be knocked out over a very long period of time. This strain of extremism continues to be very strong, whether it's in Afghanistan, or Somalia or Yemen, or any of these places.

The great advantage of the Lib Dems is precisely that no-one knows what they stand for.

It is not an arrogant government that chooses priorities, it's an irresponsible government that fails to choose.

Nothing is more important to England's arrangements for the World Cup than the state of David Beckham's foot.

I think I made the wrong career choice

But the world is ever more interdependent. Stock markets and economies rise and fall together. Confidence is the key to prosperity. Insecurity spreads like contagion. So people crave stability and order.

It's not that tens of millions of people all want to be violent. But they share the worldview that then, at its extreme, gives rise to the violence. And in my view, this is why this is such a global problem.