My friend James Morris heads the World Food Programme, whose task it is to feed the hungry. He recently told me, "If I could have just 1 per cent of … - Mohamed ElBaradei

A good start would be if the nuclear-weapon states reduced the strategic role given to these weapons. More than 15 years after the end of the Cold War, it is incomprehensible to many that the major nuclear-weapon states operate with their arsenals on hair-trigger alert — such that, in the case of a possible launch of a nuclear attack, their leaders could have only 30 minutes to decide whether to retaliate, risking the devastation of entire nations in a matter of minutes.

We must abandon the unworkable notion that it is morally reprehensible for some countries to pursue weapons of mass destruction, yet morally acceptable for others to rely on them for security - and indeed to continue to refine their capacities and postulate plans for their use

These are three concrete steps that, I believe, can readily be taken. Protect the material and strengthen verification. Control the fuel cycle. Accelerate disarmament efforts. But that is not enough. The hard part is: how do we create an environment in which nuclear weapons — like slavery or genocide — are regarded as a taboo and a historical anomaly?