In an era of global abundance, our world has the resources to reduce dramatically the massive divides that persist between rich and poor, if only those resources can be unleashed in the service of all peoples.

The global HIV/AIDS epidemic is an unprecedented crisis that requires an unprecedented response. In particular it requires solidarity - between the healthy and the sick, between rich and poor, and above all, between richer and poorer nations. We have 30 million orphans already. How many more do we have to get, to wake up?

In some ways, the challenges are even more daunting than they were at the peak of the cold war. Not only do we continue to face grave nuclear threats, but those threats are being compounded by new weapons developments, new violence within States and new challenges to the rule of law.

We had a rule in the school that when you're punished, you carry out the punishment and then complain, which I felt was absolutely unfair: if I'd done it, what was the point of complaining?

The past year's natural disasters have highlighted the invaluable contributions of volunteers in our communities. They have volunteered their time, energy and skills to save lives and to rebuild communities. In this they joined countless people around the world who volunteer every day in response to 'silent crises'. These often unsung heroes understand all too well that poverty, disease and famine are just as deadly and destructive as earthquakes, hurricanes and tsunamis.

The Arab spring reminds me a bit of the decolonisation process where one country gets independence and everybody else wants it. How about us, when do we get it, when do we make our move? And you have a situation where someone has been in power for decades, where the integrity of elections, democracy and security have really not been debated or discussed and most people suspect that elections are rigged and that the democratic rotation that elections are supposed to ensure doesn't really happen. And when this goes on for a while you are sitting on a powder keg.

Most governments only want to deploy a peacekeeping force where there is a peace agreement and there is peace to keep. They are very hesitant about putting their men and women in harm's way. It is extremely difficult to get the troops if you do not have the consent of the country where you are deploying.