Treaty on the Non-Proliferation of Nuclear Weapons
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The Treaty on the Non-Proliferation of Nuclear Weapons, commonly known as the Non-Proliferation Treaty or NPT, is an international treaty whose objective is to prevent the spread of nuclear weapons and ... Wikipedia
Condition: Ratification by the Soviet Union, the United Kingdom, the United States, and 40 other signatory states
Parties: 190 (complete list); non-parties: India, Israel, North Korea, Pakistan and South Sudan
Signed: 1 July 1968