The Washington leadership has put aside non-proliferation programmes and devoted its energies and resources to driving the country to war by extraordinary deceit, then trying to manage the catastrophe it created in Iraq.
Non-proliferation will only work if all states are willing to cooperate, and that will only happen if all feel they are being treated fairly.
For the United States to recommit itself to the obligation that we undertook in the Nuclear Non-Proliferation Treaty that many other states undertook, which was to work towards disarmament and the eventual elimination of nuclear weapons, is something that manifestly serves our national security interests.
Unlike Iran, Israel refuses to allow inspections at all, refuses to join the Non-Proliferation Treaty, has hundreds of nuclear weapons, has advanced delivery systems.
Nuclear disarmament and non-proliferation are not utopian ideals. They are critical to global peace and security.
If Iran becomes a nuclear weapon state it is the end of non-proliferation as we know it. If Iran gets a nuclear weapon you are likely to see Saudi, Egypt and other countries follow suit and we will bequeath to the next generation a nuclear arms race in the world's most unstable region.
Let me remind you that nuclear disarmament is not just an ardent desire of the people, as expressed in many resolutions of the United Nations. It is a legal commitment by the five official nuclear states, entered into when they signed the Non-Proliferation Treaty.
Issues of energy, climate change, nuclear arms control and non-proliferation are all big deals. These are problems that we have to get right globally, not just nationally, and there are big benefits in cooperating, in terms of sharing costs, in terms of sharing risks, in terms of propagating the best answers.
The issues and challenges surrounding nuclear non-proliferation are continuously evolving. They've changed dramatically at several junctures in recent memory.
Arguably, it was the introduction of international non-proliferation treaties in the late '80s that finally led to the missiles being removed from Greenham Common.