How do we deal with not just the acts of violence, but the extremist ideology that lies behind them? Because though the numbers of fanatics that go and join and kill for a group like ISIS are measured in tens of thousands, those that support the wider ideology, I'm afraid, you measure in tens of millions or more.

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.

There is no meeting of minds, no point of understanding with such terror. Just a choice: Defeat it or be defeated by it. And defeat it we must.

I think crime is a huge issue for people. If you were living in the poorest state, and you've got drug dealers at the end of the street, and your life's in misery, and you're afraid of your kids going out the door. I mean, the job of progressive politicians is to do something about that.

When my parents were growing up the world's population was under three billion. During my children's lifetime, it is likely to exceed nine billion. You don't need to be an expert to realise that sustainable development is going to become the greatest challenge we face this century

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.

I mean, you can agree or disagree with Iraq or Afghanistan, but by the way, now the great campaigning cause out there is the absence of intervention in Syria. And then in Libya, it's partial intervention. And that doesn't really explain why some countries that have literally nothing to do with the interventions in the Middle East end up getting targeted.