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

Barack Obama has injected fresh momentum into efforts - stalled for a decade - to bring about nuclear disarmament.

I am an Egyptian Muslim, educated in Cairo and New York, and now living in Vienna. My wife and I have spent half our lives in the North, half in the South. And we have experienced first hand the unique nature of the human family and the common values we all share.

When you have half of Caironese in slums, when you don't have clean water, when you don't have a sewer system, when you don't have electricity, and on top of that you live under one of the most repressive regimes right now... Well, put all that together, and it's a ticking bomb. It's not of a question of threat; it is question of looking around at the present environment and making a rational prognosis.

As long as some of us choose to rely on nuclear weapons, we continue to risk that these same weapons will become increasingly attractive to others.

Well, I think we still have to verify whatever declaration we will get and make sure that it is comprehensive and accurate. So, that would take care of the past activities.

America is always a good target for a populist. In many countries, particularly authoritarian systems, if you want to get an extra bonus, you bash the Americans.