You get these insurgent movements of populism, left and right. An insurgent movement of populism took my political party over in the UK for example.

I had discovered long ago the first lesson of political courage: to think anew. I had then learned the second: to be prepared to lead and to decide. I was now studying the third: how to take the calculated risk. I was going to alienate some people, like it or not. The moment you decide, you divide.

Sometimes people say to me, 'Well, what was the difference between Kosovo, which was a successful intervention, and Iraq and Afghanistan that have been so difficult?' And the answer is perfectly simple. In Kosovo, you have, after the removal of the loss of its regime, you had a process of political and economic reconstruction that took its part without the intervention of terrorism. If you had the intervention of terrorism, by the way, it would have been extremely difficult there - but we didn't.

Can we be sure that terrorism and WMD will join together? If we are wrong, we will have destroyed a threat that, at its least is responsible for inhuman carnage and suffering. That is something I am confident history will forgive. But if our critics are wrong and we do not act, then we will have hesitated in face of this menace, when we should have given leadership. That is something history will not forgive.

If you've got communities that feel they've been left behind, if you've got - as you do in Britain at the moment, you have communities that believe they're being changed by immigration, that they don't have job opportunities, and that they're disregarded and that they don't - they've got no stake in a future which embraces globalization, you've got to address that issue.

What I will say to people is what you require are rules and not prejudices.

I don't think it's surprising we will have to look for them. I'm confident that when the Iraq Survey Group has done its work we will find what's happened to those weapons because he had them.