The Non-Proliferation Treaty calls on the signatories to move towards dismantling their nuclear weapons.
The Nuclear Non-Proliferation Treaty was ratified in 1970 and reaffirmed by its signatories 10 years ago.
The deal's opponents see the agreement as a possibly fatal blow to the international non-proliferation system.
Brazil is a party to the Nuclear Non-Proliferation Treaty since 1998 as a non-nuclear weapons state.
Which brings us to the importance of their having signed the Nuclear Non-Proliferation Treaty.
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In 1992, China acceded to the Nuclear Non-Proliferation Treaty, whose extension China later supported in 1995.
Critics fear its real testament will be lasting damage to the global nuclear non-proliferation regime.
Whether such a policy materially advances the cause of non-proliferation appears, frankly, to be a secondary consideration.
Why do nations decide to go nuclear, especially given the almost universal nature of the non-proliferation principle?
All this month, the fate of the Nuclear Non-Proliferation Treaty has been under discussion at the UN.
The greatest challenge for big-power diplomacy today is non-proliferation, keeping shut the door to the nuclear club.
Mr Blair denies charges that he is violating Britain's commitment to disarmament under the Nuclear Non-Proliferation Treaty.
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It makes no sense to be compounding a non-proliferation problem that is already profoundly complex and difficult.
It may be the price outsiders have to pay to get down to more urgent non-proliferation business.
Iran has signed the Nuclear Non-Proliferation Treaty but not the brand-new protocol that allows for intrusive inspections.
The country has excluded sales to India because it is not a signatory to the Nuclear Non-Proliferation Treaty.
One of the main concerns that both President Garcia and I share is the issue of nuclear non-proliferation.
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It has never harmed or called into question the relevance or usefulness of the NPT's international non-proliferation agenda.
Then, the United States supported a deeply problematic final document at the just-completed Nuclear Non-Proliferation Treaty review conference.
Together, we are keeping our commitments under the Nuclear Non-Proliferation Treaty, which must be the foundation for global non-proliferation.
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As Secretary-General, I have offered a five-point plan on nuclear non-proliferation and disarmament.
"Instead it is vital that we secure genuine progress on the multilateral non-proliferation talks currently under way, " he argued.
The country does not sell uranium to India because it is not a signatory to the Nuclear Non-Proliferation Treaty.
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That wipes out the hoped for non-proliferation gain, and may be a deal-breaker.
On Friday, the UN's monthlong Nuclear Non-Proliferation Treaty Review Conference is scheduled to adopt a consensual resolution before adjourning.
But the heat also burns a huge hole in the global non-proliferation regime.
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's nuclear watchdog agency, the International Atomic Energy Agency, and the Non-Proliferation Treaty.
Sidney Drell says there are many areas of policy where all nations committed to non-proliferation should be able to agree.
The issue of nuclear non-proliferation was brought up during the debate, ahead of a major conference later in the year.
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Attitudes to security have changed within Russia too, says Rose Gottemoeller, the assistant secretary for non-proliferation at America's Energy Department.
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