Syria should not belong to one family, to one coterie, or to one party. It belongs to all the people of Syria equally, in all their religious and ethnic diversity.

I believe we should reframe our response to climate change as an imperative for growth rather than merely being a way of being green or meeting environmental commitments.

Governments that use violence to stop democratic development will not earn themselves respite forever. They will pay an increasingly high price for actions which they can no longer hide from the world with ease, and will find themselves on the wrong side of history.

We have to face the reality of climate change. It is arguably the biggest threat we are facing today.

You do have to do business with and to try to influence people you don't agree with, or find disagreeable, so it's important to stress that balance.

How long do Syrian families have to live in fear that their children will be killed or tortured, before the Security Council will act? How many people need to die before the consciences of world capitals are stirred?

Let's not be afraid to speak the common sense truth: you can't have high standards without good discipline.