I think, there is a possibility - I would say it's more than that - that we will come to a view of foreign policy going forward that learns from the past but doesn't get captured by it.

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.

I'm the f***ing Prime Minister!

The problem is some of the populism on both the far left and the far right, it can make a Tweet but not make a policy. And, you know, when you are dealing with issues that are as important and serious as this, I understand why people search for simple solutions.

In Downing Street they called me 'Boss'. Civil servants would always call me 'Prime Minister'.

September 11 was, and remains, above all an immense human tragedy. But September 11 also posed a momentous and deliberate challenge not just to America but to the world at large. The target of the terrorists was not only New York and Washington but the very values of freedom, tolerance and decency which underpin our way of life.

I feel like everyone else in this country today. I am utterly devastated.