Text of the Treaty
The States concluding this Treaty, hereinafter referred to as the Parties to the Treaty,
Considering the devastation that would be visited upon all mankind by a nuclear war and
the consequent need to make every effort to avert the danger of such a war and to take
measures to safeguard the security of peoples,
Believing that the proliferation of nuclear weapons would seriously enhance the danger
of nuclear war,
In conformity with resolutions of the United Nations General Assembly calling for the
conclusion of an agreement on the prevention of wider dissemination of nuclear weapons,
Undertaking to co-operate in facilitating the application of International Atomic Energy
Agency safeguards on peaceful nuclear activities,
Expressing their support for research, development and other efforts to further the
application, within the framework of the International Atomic Energy Agency safeguards
system, of the principle of safeguarding effectively the ow of source and special ssionable
materials by use of instruments and other techniques at certain strategic points,
Afrming the principle that the benets of peaceful applications of nuclear technology,
including any technological by-products which may be derived by nuclear-weapon States
from the development of nuclear explosive devices, should be available for peaceful
purposes to all Parties to the Treaty, whether nuclear-weapon or non-nuclear-weapon
States,
Convinced that, in furtherance of this principle, all Parties to the Treaty are entitled to
participate in the fullest possible exchange of scientic information for, and to contribute
alone or in co-operation with other States to, the further development of the applications
of atomic energy for peaceful purposes,
Declaring their intention to achieve at the earliest possible date the cessation of the nuclear
arms race and to undertake effective measures in the direction of nuclear disarmament,
Urging the co-operation of all States in the attainment 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 establishment and maintenance of international peace
and security are to be promoted with the least diversion for armaments of the world’s
human 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 manufacture or otherwise acquire nuclear weapons
or other nuclear explosive devices, or control over such weapons or 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 Agency’s safeguards system, for the exclusive purpose of
verication of the fullment 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 ssionable 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 ssionable 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 not to provide: (a) source or special
ssionable material, or (b) equipment or material especially designed or prepared for
the processing, use or production of special ssionable material, to any non-nuclear-
weapon State for peaceful purposes, unless the source or special ssionable material
shall be subject to the safeguards required by this Article.
3. The safeguards required by this Article shall be implemented in a manner designed
to comply with Article IV of this Treaty, and to avoid hampering the economic or
technological development of the Parties or international co-operation in the eld
of peaceful nuclear activities, including the international exchange of nuclear
material and equipment for the processing, use or production of nuclear material for
peaceful purposes in accordance with the provisions of this Article and the principle of
safeguarding set forth in the Preamble of the Treaty.
4. Non-nuclear-weapon States Party to the Treaty shall conclude agreements with the
International Atomic Energy Agency to meet the requirements of this Article either
individually or together with other States in accordance with the Statute of the International
Atomic Energy Agency. Negotiation of such agreements shall commence within 180
days from the original entry into force of this Treaty. For States depositing their instruments
of ratication or accession after the 180-day period, negotiation of such agreements
shall commence not later than the date of such deposit. Such agreements shall enter
into force not later than eighteen months after the date of initiation of negotiations.
Article IV
1. Nothing in this Treaty shall be interpreted as affecting the inalienable right of all the
Parties to the Treaty to develop research, production and use of nuclear energy for
peaceful purposes without discrimination and in conformity with Articles I 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 scientic 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, especially in the territories of non-nuclear-weapon States Party to
the Treaty, with due consideration for the needs of the developing areas of the world.
Article V
Each Party to the Treaty undertakes to take appropriate measures to ensure that,
in accordance with this Treaty, under appropriate international observation and
through appropriate international procedures, potential benets from any peaceful
applications of nuclear explosions will be made available to non-nuclear-weapon States
Party to the Treaty on a non-discriminatory basis and that the charge to such Parties
for the explosive devices used will be as low as possible and exclude any charge for
research and development. Non-nuclear-weapon States Party to the Treaty shall
be able to obtain such benets, pursuant to a special international agreement or
agreements, through an appropriate international body with adequate representation
of non-nuclear-weapon States. Negotiations on this subject shall commence as soon
as possible after the Treaty enters into force. Non-nuclear-weapon States Party to the
Treaty so desiring may also obtain such benets pursuant to bilateral agreements.
Article VI
Each of the Parties to the Treaty undertakes to pursue negotiations in good faith on
effective measures relating to cessation of the nuclear arms race at an early date and
to nuclear disarmament, and on a treaty on general and complete disarmament under
strict and effective international control.
Article VII
Nothing in this Treaty affects the right of any group of States to conclude regional treaties
in order to assure the total absence of nuclear weapons in their respective territories.
Article VIII
1. Any Party to the Treaty may propose amendments to this Treaty. The text of any proposed
amendment shall be submitted to the Depositary Governments which shall circulate
it to all Parties to the Treaty. Thereupon, if requested to do so by one-third or more of
the Parties to the Treaty, the Depositary Governments shall convene a conference, to
which they shall invite all the Parties to the Treaty, 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 ratication of the
amendment upon the deposit of such instruments of ratication by a majority of all
the Parties, including the instruments of ratication 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.
Thereafter, it shall enter into force for any other Party upon the deposit of its instrument
of ratication 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 assuring that the purposes of the Preamble and the provisions of the Treaty are being
realised. At intervals of ve years thereafter, a majority of the Parties to the Treaty may obtain,
by submitting a proposal to this effect to the Depositary Governments, the convening
of further conferences with the same objective of reviewing the operation of the Treaty.
Article IX
1. This Treaty shall be open to all States for signature. Any State which does not sign the
Treaty before its entry into force in accordance with paragraph 3 of this Article may
accede to it at any time.
2. This Treaty shall be subject to ratication by signatory States. Instruments of ratication
and instruments of accession shall be deposited with the Governments of the United
Kingdom of Great Britain and Northern Ireland, the Union of Soviet Socialist Republics
and the United States of America, which are hereby designated the Depositary
Governments.
3. This Treaty shall enter into force after its ratication by the States, the Governments of
which are designated Depositaries of the Treaty, and forty other States signatory to this
Treaty and the deposit of their instruments of ratication. For the purposes of this Treaty,
a nuclear-weapon State is one which has manufactured and exploded a nuclear
weapon or other nuclear explosive device prior to 1 January 1967.
4. For States whose instruments of ratication or accession are deposited subsequent to
the entry into force of this Treaty, it shall enter into force on the date of the deposit of
their instruments of ratication or accession.
5. The Depositary Governments shall promptly inform all signatory and acceding States of
the date of each signature, the date of deposit of each instrument of ratication or of
accession, the date of the entry into force of this Treaty, and the date of receipt of any
requests for convening a conference or other notices.
6. This Treaty shall be registered by the Depositary Governments pursuant to Article 102
of the Charter 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 jeopardized the supreme interests of its country. It shall give notice of such
withdrawal to all other Parties to the Treaty and to the United Nations Security Council
three months in advance. Such notice shall include a statement of the extraordinary
events it regards as having jeopardized its supreme interests.
2. Twenty-ve years after the entry into force of the Treaty, a conference shall be convened
to decide whether the Treaty shall continue in force indenitely, or shall be extended
for an additional xed period or periods. This decision shall be taken by a majority of
the Parties to the Treaty.
Article XI
This Treaty, the English, Russian, French, Spanish and Chinese texts of which are equally
authentic, shall be deposited in the archives of the Depositary Governments. Duly
certied copies of this Treaty shall be transmitted by the Depositary Governments to the
Governments of the signatory and acceding States.
IN WITNESS WHEREOF the undersigned, duly authorized, have signed this Treaty.
DONE in triplicate, at the cities of London, Moscow and Washington, the rst day of July,
one thousand nine hundred and sixty-eight.
_________
Note: On 11 May 1995, in accordance with article X, paragraph 2, the Review and Extension
Conference of the Parties to the Treaty on the Non-Proliferation of Nuclear Weapons
decided that the Treaty should continue in force indenitely (see decision 3).