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The Nuclear Non-Proliferation Treaty (NPT), also known as the Treaty on the Non-Proliferation of Nuclear Weapons, is among the seminal treaties of the 20th century. First signed by 93 governments in 1968, the treaty entered into force on March 5, 1970. As of 2015, 190 states were signatories to the treaty. The agreement enshrined in the treaty rests on three pillars: non-proliferation (non-nuclear-weapon state signatories forgo ever becoming nuclear-weapon states), right to peaceful use of nuclear technology (nuclear-weapon states recognize the right of all signatory states to generate nuclear power for peaceful purposes), and disarmament (nuclear-weapon state signatories commit to end their nuclear arms race and engage in good faith negotiations to eliminate their nuclear arsenals). This entry presents information regarding the origins and ...

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