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  2. List of parties to the Treaty on the Non-Proliferation of ...

    en.wikipedia.org/wiki/List_of_parties_to_the...

    The treaty came into force and closed for signature on 5 March 1970 with the deposit of ratification of the three depositary states and 40 others. Since then, states that did not sign the treaty may only accede to it. Date NPT first effective (including USSR, YU, CS of that time) 1st decade: ratified or acceded 1968–1977

  3. Treaty on the Non-Proliferation of Nuclear Weapons - Wikipedia

    en.wikipedia.org/wiki/Treaty_on_the_Non...

    Opened for signature in 1968, the treaty entered into force in 1970. As required by the text, after twenty-five years, NPT parties met in May 1995 and agreed to extend the treaty indefinitely. [4] More countries are parties to the NPT than any other arms limitation and disarmament agreement, a testament to the treaty's significance. [3]

  4. List of parties to the Comprehensive Nuclear-Test-Ban Treaty

    en.wikipedia.org/wiki/List_of_parties_to_the...

    Nine Annex 2 states have not ratified the treaty: China, Egypt, Iran, Israel, Russia and the United States have already signed the Treaty, whereas India, North Korea and Pakistan have not signed it. The treaty will come into force only with the signature and ratification of the above Annex 2 states of the treaty, 180 days after they have all ...

  5. Comprehensive Nuclear-Test-Ban Treaty - Wikipedia

    en.wikipedia.org/wiki/Comprehensive_Nuclear-Test...

    Not in force 9 Annex 2 states still need to take further action for the treaty to enter into force. 6 are signatories who have not ratified: China, Egypt, Iran, Israel, Russia and the United States. 3 are non-signatories and have not ratified: India, Pakistan, and North Korea. Condition: 180 days after ratification by

  6. Agreed Framework - Wikipedia

    en.wikipedia.org/wiki/Agreed_Framework

    On 12 December 1985, North Korea became a party to the Treaty on the Non-Proliferation of Nuclear Weapons (NPT). On 10 April 1992, its NPT safeguards agreement entered into force. In May 1992, North Korea submitted its initial report to the IAEA under that agreement, and International Atomic Energy Agency (IAEA) inspections began.

  7. IAEA safeguards - Wikipedia

    en.wikipedia.org/wiki/IAEA_safeguards

    The Treaty on the Nonproliferation of Nuclear Weapons (NPT) opened for signature in 1968 and entered into force in 1970. The NPT defines nuclear weapons states as the United States of America, the United Kingdom of Great Britain and Northern Ireland, the People's Republic of China, the Russian Federation, and France.

  8. Nuclear proliferation - Wikipedia

    en.wikipedia.org/wiki/Nuclear_proliferation

    The NPT entered into force in March 1970. Since the mid-1970s, the primary focus of non-proliferation efforts has been to maintain, and even increase, international control over the fissile material and specialized technologies necessary to build such devices because these are the most difficult and expensive parts of a nuclear weapons program.

  9. Treaty on the Prohibition of Nuclear Weapons - Wikipedia

    en.wikipedia.org/wiki/Treaty_on_the_Prohibition...

    The "Treaty shall enter into force 90 days after the fiftieth instrument of ratification, acceptance, approval or accession". Article 16 states that the Treaty "shall not be subject to reservations ".