Deterrence failed completely as a guide in setting rational limits on the size and composition of military forces, spurring an insatiable arms race with a reckless proliferation of the most destructive power ever unleashed, tailored for delivery by a vast array of vehicles to a stupefying array of targets.

It is a measure of the arrogance of nations - but especially of the nuclear-weapon states - to assert that a nuclear-weapons-free world is impossible when, in fact, ninety-five percent of the nations of the world already are nuclear free.

Mammoth organizations, these ponderous processes. Many people don't realize that the nuclear capability that this country [USA] amassed and maintained over the period of the Cold War cost $6 trillion .

I was raised to believe in the innate goodness of humanity, developed a deep sense of the dignity of the individual human being, and had great appreciation for the miracle of life and our existence on this earth.

By and large, the world wants to move away from the nuclear era. The question is how fast and how far. In a world of sovereign nation-states, I can't rationalize any number above zero. If it's more than zero, you have to acknowledge every nation has the right to have them.

Deterrence failed completely as a guide in setting rational limits on the size and composition of military forces, spurring an insatiable arms race with a reckless proliferation of the most destructive power ever unleashed, tailored for delivery by a vast array of vehicles to a stupefying array of targets.

It is the foremost responsibility of the United States, having been the predominant nuclear power, to take the lead in scaling this back and making good on its signed and sealed and ratified obligation in Article 6 of the non-proliferation treaty going back to '68 to eliminate this nuclear arsenal. That's a serious international obligation.