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

Psychology is as important as substance. If you treat people with respect, they will go out of their way to accommodate you. If you treat them in a patronizing way, they will go out of their way to make your life difficult.

I think one country with nuclear weapons is one country too many.

Well, first of all, we now have everybody with the exception of India, Pakistan, and Israel, and I dont think these three countries are going to join by simply providing them an incentive, in terms of technology.

Whether weapons exist in Iraq, Saddam Hussein or post-Saddam Hussein, it is a serious enough issue that require that we continue to go and make sure that Iraq does not have weapons.

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.

You either have a civil society or you dont.