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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 Prohibition of Nuclear Weapons - Wikipedia

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

    Article 1, 1c (in extension of Article 1, 2a) prohibits direct or indirect control of nuclear weapons. Accepting this provision would preclude a common European nuclear force or German financing of and limited decision on the French force de frappe; both options are sometimes discussed. [35]

  4. 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]

  5. List of treaties unsigned or unratified by the United States

    en.wikipedia.org/wiki/List_of_treaties_unsigned...

    Signed treaties enter into force only if ratified by at least two-thirds (67 members) of the United States Senate. (Technically, the Senate itself does not ratify treaties, it only approves or rejects resolutions of ratification submitted by the Committee on Foreign Relations ; if approved, the United States exchanges the instruments of ...

  6. List of parties to the Treaty on the Prohibition of Nuclear ...

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

    Following Article 15 of the treaty, it entered into force on 22 January 2021 after it had been ratified by 50 states. [ 1 ] [ 2 ] States have the option of acceding to the treaty without signing. A total of 197 states may become parties to the Treaty on the Prohibition of Nuclear Weapons, including all 193 member states of the United Nations ...

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

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

    Technically they will not be "parties" until the treaty enters into force, [1] at which point these states will also be Member States of the Comprehensive Nuclear-Test-Ban Treaty Organization , which comes into existence upon entry into force of the treaty. Non-contracting states are also listed, including those that are signatories and those ...