Barack Obama has injected fresh momentum into efforts - stalled for a decade - to bring about nuclear disarmament.
Since the end of the Cold War two main nuclear powers have begun to make big reductions in their nuclear arsenals. Each of them is dismantling about 2,000 nuclear warheads a year.
The fewer nuclear weapons possessed by the fewest countries is safer, not only because of the possibility of a nuclear accident but also a nuclear war.
See {633890} regarding the nuclear accidents at that time.
The best reduction, the most final reduction, is to destroy the warheads.
We in no way are naive to think that just because Russia and the United States agree to reduce their arsenals, that everyone else will fall in line.
We can be just as safe with a smaller, more efficient nuclear arsenal at less cost.
When the START 2 treaty has been implemented - and remember it has not yet been ratified - we will be left with some 15,000 nuclear warheads, active and in reserve. Fifteen thousand weapons with an average yield of 20 Hiroshima bombs.
The world wants disarmament, the world needs disarmament. We have it in our power to help fashion future history.
The core of detente [with Russia] is the reduction in arms.
We have a chance to wind down and expedite the removal of 96 percent of the world's nuclear weapons. What an achievement it would be, if at the end of the next administration, we could say that the nuclear arsenals of both Russia and the United States had been reduced to the barest minimums.
What we achieved was a nuclear pause, not a nuclear halt.
I don't want nations feeling like that they can bully ourselves and our allies. I want to have a ballistic defense system so that we can make the world more peaceful, and at the same time I want to reduce our own nuclear capacities to the level commiserate with keeping the peace.
Concrete steps are needed to reduce the role of nuclear weapons in military plans, doctrines, and policies.
The sheer folly of trying to defend a nation by destroying all life on the planet must be apparent to anyone capable of rational thought. Nuclear capability must be reduced to zero, globally, permanently. There is no other option.
Disarment ... is a continuing imperative.
Seoul will do what it can do, such as letting citizens participate in cutting energy use or in producing more of their own energy. This is how we can thwart the increase in nuclear plants.
We have missiles - nuclear missiles - on hair-trigger alert. We should be in the business of nuclear disarmament right now, which neither of these candidates [Donald Trump or Hillary Clinton] are talking about.
We're not just discussing limits on a further increase of nuclear weapons; we seek, instead, to reduce their number. We seek the total elimination one day of nuclear weapons from the face of the Earth.
All nuclear weapon states should now recognize that this is so, and declare - in Treaty form - that they will never be the first to use nuclear weapons. This would open the way to the gradual, mutual reduction of nuclear arsenals, down to zero.