Treaty on the Non-Proliferation of Nuclear Weapons (NPT)-1970
Entered into force: 5 March 1970
Text of the Treaty
The States concluding this Treaty, hereinafterย referred to as the Parties to the Treaty,
Considering the devastation that would be visitedย upon all mankind by a nuclear war and the consequentย need to make every effort to avert the danger ofย such a war and to take measures to safeguard theย security of peoples,
Believing that the proliferation of nuclear weaponsย would seriously enhance the danger of nuclear war,
In conformity with resolutions of the United Nationsย General Assembly calling for the conclusion of anย agreement on the prevention of wider disseminationย of nuclear weapons,
Undertaking to co-operate in facilitating the applicationย of International Atomic Energy Agency safeguardsย on peaceful nuclear activities,
Expressing their support for research, developmentย and other efforts to further the application, withinย the framework of the International Atomic Energyย Agency safeguards system, of the principle of safeguardingย effectively the flow of source and special fissionableย materials by use of instruments and other techniquesย at certain strategic points,
Affirming the principle that the benefits of peacefulย applications of nuclear technology, including anyย technological by-products which may be derived byย nuclear-weapon States from the development of nuclearย explosive devices, should be available for peacefulย purposes to all Parties to the Treaty, whether nuclear-weaponย or non-nuclear-weapon States,
Convinced that, in furtherance of this principle,ย all Parties to the Treaty are entitled to participateย in the fullest possible exchange of scientific informationย for, and to contribute alone or in co-operation withย other States to, the further development of the applicationsย of atomic energy for peaceful purposes,
Declaring their intention to achieve at the earliestย possible date the cessation of the nuclear arms raceย and to undertake effective measures in the directionย of nuclear disarmament,
Urging the co-operation of all States in the attainmentย of this objective,
Recalling the determination expressed by the Parties to the 1963 Treaty banning nuclear weapons tests in the atmosphere, in outer space and under water in its Preamble to seek to achieve the discontinuance of all test explosions of nuclear weapons for all time and to continue negotiations to this end,
Desiring to further the easing of international tension and the strengthening of trust between States in order to facilitate the cessation of the manufacture of nuclear weapons, the liquidation of all their existing stockpiles, and the elimination from national arsenals of nuclear weapons and the means of their delivery pursuant to a Treaty on general and complete disarmament under strict and effective international control,
Recalling that, in accordance with the Charter of the United Nations, States must refrain in their international relations from the threat or use of force against the territorial integrity or political independence of any State, or in any other manner inconsistent with the Purposes of the United Nations, and that the establishmentย and maintenance of international peace and securityย are to be promoted with the least diversion forย armaments of the worldโs humanย and economic resources,
Have agreed as follows:
Article I
Each nuclear-weapon State Party to the Treaty undertakes not to transfer to any recipient whatsoever nuclear weapons or other nuclear explosive devices or control over such weapons or explosive devices directly, or indirectly; and not in any way to assist, encourage,or induce any non-nuclear-weapon State to manufactureย or otherwise acquire nuclear weapons or other nuclearย explosive devices, or control over such weapons orย explosive devices.
Article II
Each non-nuclear-weapon State Party to the Treaty undertakes not to receive the transfer from any transferor whatsoever of nuclear weapons or other nuclear explosive devices or of control over such weapons or explosive devices directly, or indirectly; not to manufacture or otherwise acquire nuclear weapons or other nuclear explosive devices; and not to seek or receive any assistance in the manufacture of nuclear weapons or other nuclear explosive devices.
Article III
1. Each non-nuclear-weapon State Party to the Treaty undertakes to accept safeguards, as set forth in an agreement to be negotiated and concluded with the International Atomic Energy Agency in accordance with the Statute of the International Atomic Energy Agency and the Agencyโs safeguards system, for the exclusive purpose of verification of the fulfilment of its obligations assumed under this Treaty with a view to preventing diversion of nuclear energy from peaceful uses to nuclear weapons or other nuclear explosive devices. Procedures for the safeguards required by this Article shall be followed with respect to source or special fissionable material whether it is being produced, processed or used in any principal nuclear facility or is outside any such facility. The safeguards required by this Article shall be applied on all source or special fissionable material in all peaceful nuclear activities within the territory of such State, under its jurisdiction, or carried out under its control anywhere.
2. Each State Party to the Treaty undertakes notย to provide: (a) source or special fissionable material,ย or (b) equipment or material especially designedย or prepared for the processing, use or productionย of special fissionable material, to any non-nuclear-weaponย State for peaceful purposes, unless the source orย special fissionable material shall be subject toย the safeguards required by this Article.
3. The safeguards required by this Article shallย be implemented in a manner designed to comply withย Article IV of this Treaty, and to avoid hamperingย the economic or technological development of theย Parties or international co-operation in the fieldย of peaceful nuclear activities, including the internationalย exchange of nuclear material and equipment for theย processing, use or production of nuclear materialย for peaceful purposes in accordance with the provisionsย of this Article and the principle of safeguardingย set forth in the Preamble of the Treaty.
4. Non-nuclear-weapon States Party to the Treatyย shall conclude agreements with the Internationalย Atomic Energy Agency to meet the requirements ofย this Article either individually or together withย other States in accordance with the Statute of theย International Atomic Energy Agency. Negotiation ofย such agreements shall commence within 180 days fromย the original entry into force of this Treaty. Forย States depositing their instruments of ratificationย or accession after the 180-day period, negotiationย of such agreements shall commence not later thanย the date of such deposit. Such agreements shall enterย into force not later than eighteen months after theย date of initiation of negotiations.
Article IV
1. Nothing in this Treaty shall be interpretedย as affecting the inalienable right of all the Partiesย to the Treaty to develop research, production andย use of nuclear energy for peaceful purposes withoutย discrimination and in conformity with Articles Iย and II of this Treaty.
2. All the Parties to the Treaty undertake to facilitate, and have the right to participate in, the fullest possible exchange of equipment, materials and scientific and technological information for the peaceful uses of nuclear energy. Parties to the Treaty in a position to do so shall also co-operate in contributing alone or together with other States or international organizations to the further development of the applications of nuclear energy for peaceful purposes, especiallyย in the territories of non-nuclear-weapon States Partyย to the Treaty, with due consideration for the needsย of the developing areas of the world.
Article V
Each Party to the Treaty undertakes to take appropriateย measures to ensure that, in accordance with thisย Treaty, under appropriate international observationย and through appropriate international procedures,ย potential benefits from any peaceful applicationsย of nuclear explosions will be made available to non-nuclear-weaponย States Party to the Treaty on a non-discriminatoryย basis and that the charge to such Parties for theย explosive devices used will be as low as possibleย and exclude any charge for research and development.ย Non-nuclear-weapon States Party to the Treaty shallย be able to obtain such benefits, pursuant to a specialย international agreement or agreements, through anย appropriate international body with adequate representationย of non-nuclear-weapon States. Negotiations on thisย subject shall commence as soon as possible afterย the Treaty enters into force. Non-nuclear-weaponย States Party to the Treaty so desiring may also obtainย such benefits pursuant to bilateral agreements.
Article VI
Each of the Parties to the Treaty undertakes toย pursue negotiations in good faith on effective measuresย relating to cessation of the nuclear arms race atย an early date and to nuclear disarmament, and onย a treaty on general and complete disarmament underย strict and effective international control.
Article VII
Nothing in this Treaty affects the right of anyย group of States to conclude regional treaties in order to assure the total absence of nuclear weaponsย in their respective territories.
Article VIII
1. Any Party to the Treaty may propose amendmentsย to this Treaty. The text of any proposed amendmentย shall be submitted to the Depositary Governmentsย which shall circulate it to all Parties to the Treaty. Thereupon, if requested to do so by one-third orย more of the Parties to the Treaty, the Depositaryย Governments shall convene a conference, to whichย they shall invite all the Parties to the Treaty,ย to consider such an amendment.
2. Any amendment to this Treaty must be approved by a majority of the votes of all the Parties to the Treaty, including the votes of all nuclear-weapon States Party to the Treaty and all other Parties which, on the date the amendment is circulated, are members of the Board of Governors of the International Atomic Energy Agency. The amendment shall enter into force for each Party that deposits its instrument of ratification of the amendment upon the deposit of such instruments of ratification by a majority of all the Parties, including the instruments of ratification of all nuclear-weapon States Party to the Treaty and all other Parties which, on the date the amendment is circulated, are members of the Board of Governors of the International Atomic Energy Agency.ย Thereafter, it shall enter into force for any otherย Party upon the deposit of its instrument of ratificationย of the amendment.
3. Five years after the entry into force of this Treaty, a conference of Parties to the Treaty shall be held in Geneva, Switzerland, in order to review the operation of this Treaty with a view to assuringย that the purposes of the Preamble and the provisionsย of the Treaty are being realised. At intervals ofย five years thereafter, a majority of the Partiesย to the Treaty may obtain, by submitting a proposalย to this effect to the Depositary Governments, theย convening of further conferences with the same objectiveย of reviewing the operation of the Treaty.
Article IX
1. This Treaty shall be open to all States forย signature. Any State which does not sign the Treatyย before its entry into force in accordance with paragraphย 3 of this Article may accede to it at any time.
2. This Treaty shall be subject to ratificationย by signatory States. Instruments of ratificationย and instruments of accession shall be deposited withย the Governments of the United Kingdom of Great Britainย and Northern Ireland, the Union of Soviet Socialistย Republics and the United States of America, whichย are hereby designated the Depositary Governments.
3. This Treaty shall enter into force after itsย ratification by the States, the Governments of whichย are designated Depositaries of the Treaty, and fortyย other States signatory to this Treaty and the depositย of their instruments of ratification. For the purposesย of this Treaty, a nuclear-weapon State is one whichย has manufactured and exploded a nuclear weapon orย other nuclear explosive device prior to 1 Januaryย 1967.
4. For States whose instruments of ratificationย or accession are deposited subsequent to the entryย into force of this Treaty, it shall enter into forceย on the date of the deposit of their instruments ofย ratification or accession.
5. The Depositary Governments shall promptly informย all signatory and acceding States of the date ofย each signature, the date of deposit of each instrumentย of ratification or of accession, the date of theย entry into force of this Treaty, and the date ofย receipt of any requests for convening a conferenceย or other notices.
6. This Treaty shall be registered by the Depositaryย Governments pursuant to Article 102 of the Charterย of the United Nations.
Article X
1. Each Party shall in exercising its national sovereignty have the right to withdraw from the Treaty if it decides that extraordinary events, related to the subject matter of this Treaty, have jeopardizedย the supreme interests of its country. It shall giveย notice of such withdrawal to all other parties toย the Treaty and to the United Nations Security Councilย three months in advance. Such notice shall includeย a statement of the extraordinary events it regardsย as having jeopardized its supreme interests.
2. Twenty-five years after the entry into forceย of the Treaty, a conference shall be convened toย decide whether the Treaty shall continue in forceย indefinitely, or shall be extended for an additionalย fixed period or periods. This decision shall be takenย by a majority of the Parties to the Treaty.1
Article XI
This Treaty, the English, Russian, French, Spanishย and Chinese texts of which are equally authentic,ย shall be deposited in the archives of the Depositaryย Governments. Duly certified copies of this Treatyย shall be transmitted by the Depositary Governmentsย to the Governments of the signatory and accedingย States.
IN WITNESS WHEREOF the undersigned, duly authorized,ย have signed this Treaty.
DONE in triplicate, at the cities of London, Moscowย and Washington, the first day of July, one thousandย nine hundred and sixty-eight.
Note:
On 11 May 1995, in accordance with article X, paragraphย 2, the Review and Extension Conference of the Partiesย to the Treaty on the Non-Proliferation of Nuclear Weaponsย decided that the Treaty should continue in force indefinitelyย (see decision 3).
India is not a party to this treaty


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