The war on drugs has failed in West Africa and around the world

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.

Sometimes I walk into a situation and I know somebody is going to provoke me - not maybe, I know he will provoke me - I know he will provoke me! And there are times when I simply refuse to be provoked. And the other times you have to use that superior knowledge to carry on at work without distraction, and don't allow yourself to be distracted.

As we move forward, you cannot resolve the potential food crisis or shortages without science being part of the solution. Science has to be part of the solution but African governments - and these are decisions for governments, whether they embrace or do not embrace genetically modified food - and for the moment, most African companies do not accept genetically modified seeds.

I think the world has moved on.

The death toll from small arms dwarfs that of all other weapons systems — and in most years greatly exceeds the toll of the atomic bombs that devastated Hiroshima and Nagasaki. In terms of the carnage they cause, small arms, indeed, could well be described as 'weapons of mass destruction'.

National markets are held together by shared values and confidence in certain minimum standards. But in the new global market, people do not yet have that confidence.