List of parties to the Treaty on the Non-Proliferation of Nuclear Weapons

Participation in the Nuclear Non-Proliferation Treaty

Recognized nuclear-weapon state ratifiers   Recognized nuclear weapon state acceders   Other ratifiers   Other acceders or succeeders

Acceder which announced its withdrawal (North Korea)   Unrecognized state, abiding by treaty   Non-signatories   Partially recognized state which ratified (Republic of China)

The list of parties to the Nuclear Non-Proliferation Treaty encompasses the states which have signed and ratified or acceded to the international agreement limiting the spread of nuclear weapons.

On 1 July 1968, the Nuclear Non-Proliferation Treaty (NPT) was opened for signature. The three depositary states were the Soviet Union (and later its successor state Russia), the United Kingdom, the United States; states wishing to become a party to the NPT must deposit their instruments of ratification, accession or succession with at least one of the depositary governments. 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
     2nd decade: ratified or acceded 1978–1987
     3rd decade: ratified or acceded since 1988
     Never signed (India, Israel, Pakistan, South Sudan)

The treaty recognizes five states as nuclear-weapon states: the United States, Russia, the United Kingdom, France, and China (also the five permanent members of the United Nations Security Council). China and France acceded to the treaty in 1992. Four other states are known or believed to possess nuclear weapons: India, Pakistan and North Korea have openly tested and declared that they possess nuclear weapons, while Israel has had a policy of opacity regarding its nuclear weapons program. India, Israel, and Pakistan have never signed the treaty, while North Korea was a party to the treaty but announced its withdrawal on 10 January 2003, which became effective ninety days later. ^[1] However, there is disagreement among the parties to the treaty whether North Korea's withdrawal was in conformity with the terms of the treaty. ^[2]

The NPT remains the most widely subscribed to nuclear arms control treaty in history. ^[3] As of February 2015, 190 states are recognized as parties to the treaty, excluding North Korea which withdrew. The State of Palestine is the most recent state to have joined, having submitted its instrument of succession on 10 February 2015. In addition, the Republic of China (Taiwan), which is currently only recognized by 12 UN member states, ratified the treaty prior to the United Nations General Assembly's vote to transfer China's seat to the People's Republic of China (PRC) in 1971; Taiwan has accepted comprehensive International Atomic Energy Agency (IAEA) safeguards and the measures of the Additional Protocol to verify that its nuclear program is entirely peaceful. ^[4] Four UN member states have never signed the treaty: India, Israel, Pakistan, and South Sudan. The Cook Islands and Niue, two associated states of New Zealand which have had their "full treaty-making capacity" recognised by United Nations Secretariat, ^[5] are not parties to the treaty but consider themselves bound by its provisions by virtue of their administration by New Zealand when the latter ratified the NPT. ^[6]

Ratified or acceded states

189 UN member states as well as two observers, namely the Holy See and the State of Palestine, have become parties to the NPT. However, one of these states (North Korea) submitted a notice of withdrawal. See the section #Withdrawn state below for more details.

Multiple dates indicate the different days in which states submitted their signature or deposition, varied by location. This location is noted by: (L) for London, (M) for Moscow, and (W) for Washington D.C.

Bolded states with a dagger () are recognized as nuclear weapons states by the treaty.

State [7] [8] [9] [10]	Signed	Deposited	Method
Afghanistan	1 Jul 1968 (L, M, W)	4 Feb 1970 (W) 5 Feb 1970 (M) 5 Mar 1970 (L)	Ratification
Albania		12 Sep 1990 (L) 14 Sep 1990 (M) 28 Sep 1990 (W)	Accession
Algeria		12 Jan 1995 (L, M, W)	Accession
Andorra		7 Jun 1996 (L) 25 Jun 1996 (W) 2 Jul 1996 (M)	Accession
Angola		14 Oct 1996 (W) 30 Apr 2010 (M)	Accession
Antigua and Barbuda		17 Jun 1985 (L)	Succession from   United Kingdom
Argentina		10 Feb 1995 (W) 17 Feb 1995 (L)	Accession
Armenia		21 Jun 1993 (M) 15 Jul 1993 (W)	Accession
Australia	27 Feb 1970 (L, M, W)	23 Jan 1973 (L, M, W)	Ratification
Austria	1 Jul 1968 (L, M, W)	27 Jun 1969 (L, W) 28 Jun 1969 (M)	Ratification
Azerbaijan		22 Sep 1992 (M)	Accession
Bahamas		11 Aug 1976 (L) 13 Aug 1976 (W) 30 Aug 1976 (M)	Succession from   United Kingdom
Bahrain		3 Nov 1988 (W)	Accession
Bangladesh		31 Aug 1979 (L, M) 27 Sep 1979 (W)	Accession
Barbados	1 Jul 1968 (W)	21 Feb 1980 (W)	Ratification
Belarus		9 Feb 1993 (M) 22 Jul 1993 (W) 23 Jul 1993 (L)	Accession
Belgium	20 Aug 1968 (L, M, W)	2 May 1975 (L, W) 4 May 1975 (M)	Ratification
Belize		9 Aug 1985 (L)	Succession from   United Kingdom
Benin	1 Jul 1968 (W)	31 Oct 1972 (W)	Ratification
Bhutan		23 May 1985 (W)	Accession
Bolivia	1 Jul 1968 (W)	26 May 1970 (W)	Ratification
Bosnia and Herzegovina		15 Aug 1994 (W)	Succession from   SFR Yugoslavia
Botswana	1 Jul 1968 (W)	28 Apr 1969 (L)	Ratification
Brazil		18 Sep 1998 (L, M, W)	Accession
Brunei		26 Mar 1985 (W)	Accession
Bulgaria	1 Jul 1968 (L, M, W)	5 Sep 1969 (W) 18 Sep 1969 (M) 3 Nov 1969 (L)	Ratification
Burkina Faso	25 Nov 1968 (W) 11 Aug 1969 (M)	3 Mar 1970 (W)	Ratification
Burundi		19 Mar 1971 (M)	Accession
Cabo Verde		24 Oct 1979 (M)	Accession
Cambodia		2 Jun 1972 (W) 25 Sep 1987 (M)	Accession
Cameroon	17 Jul 1968 (W) 18 Jul 1968 (M)	8 Jan 1969 (W)	Ratification
Canada	23 Jul 1968 (L, W) 29 Jul 1968 (M)	8 Jan 1969 (L, M, W)	Ratification
Central African Republic		25 Oct 1970 (W)	Accession
Chad	1 Jul 1968 (M)	10 Mar 1971 (W) 11 Mar 1971 (M) 23 Mar 1971 (L)	Ratification
Chile		25 May 1995 (W)	Accession
China		9 Mar 1992 (L) 12 Mar 1992 (M) 17 Mar 1992 (W)	Accession
Colombia	1 Jul 1968 (W)	8 Apr 1986 (W) 29 Apr 1986 (M) 30 Apr 1986 (L)	Ratification
Comoros		4 Oct 1995 (W)	Accession
Republic of the Congo	26 Jul 1968 (M)	23 Oct 1978 (W)	Ratification
Costa Rica	1 Jul 1968 (W)	3 Mar 1970 (W)	Ratification
Côte d'Ivoire	1 Jul 1968 (W)	6 Mar 1973 (W)	Ratification
Croatia		29 Jun 1992 (W)	Succession from   SFR Yugoslavia
Cuba		4 Nov 2002 (M)	Accession
Cyprus	1 Jul 1968 (L, M, W)	10 Feb 1970 (M) 16 Feb 1970 (W) 5 Mar 1970 (L)	Ratification
Czech Republic		1 Jan 1993 (M, W) 5 Apr 1993 (L)	Succession from   Czechoslovakia Signed 1 July 1968 Deposited 22 July 1969
Democratic Republic of the Congo	22 Jul 1968 (W) 17 Sep 1968 (L)	4 Aug 1970 (W)	Ratification
Denmark	1 Jul 1968 (L, M, W)	3 Jan 1969 (L, M, W)	Ratification
Djibouti		16 Oct 1996 (W)	Accession
Dominica		10 Aug 1984 (L)	Succession from   United Kingdom
Dominican Republic	1 Jul 1968 (W)	24 Jul 1971 (W)	Ratification
Ecuador	9 Jul 1968 (W)	7 Mar 1969 (W)	Ratification
Egypt	1 Jul 1968 (L, M)	26 Feb 1981 (L)	Ratification
El Salvador	1 Jul 1968 (W)	11 Jul 1972 (W)	Ratification
Equatorial Guinea		1 Nov 1984 (W)	Accession
Eritrea		16 Mar 1995 (W)	Accession
Estonia		7 Jan 1992 (L) 31 Jan 1992 (W)	Accession
Ethiopia	5 Sep 1968 (L, M, W)	5 Feb 1970 (M) 5 Mar 1970 (L, W)	Ratification
Fiji		21 Jul 1972 (W) 14 Aug 1972 (L) 29 Aug 1972 (M)	Succession from   United Kingdom
Finland	1 Jul 1968 (L, M, W)	5 Feb 1969 (L, M, W)	Ratification
France		2 Aug 1992 (M) 3 Aug 1992 (L, W)	Accession
Gabon		19 Feb 1974 (W)	Accession
Gambia	4 Sep 1968 (L) 20 Sep 1968 (W) 24 Sep 1968 (M)	12 May 1975 (W)	Ratification
Georgia		7 Mar 1994 (W)	Accession
Germany	28 Nov 1969 (L, M, W)	2 May 1975 (L, W)	Ratification as   West Germany Also   East Germany Ratified 31 October 1969
Ghana	1 Jul 1968 (M, W) 24 Jul 1968 (L)	4 May 1970 (L) 5 May 1970 (W) 11 May 1970 (M)	Ratification
Greece	1 Jul 1968 (M, W)	11 Mar 1970 (W)	Ratification
Grenada		2 Sep 1975 (L) 3 Dec 1975 (W)	Succession from   United Kingdom
Guatemala	26 Jul 1968 (W)	22 Sep 1970 (W)	Ratification
Guinea		29 Apr 1985 (M)	Accession
Guinea-Bissau		20 Aug 1976 (M)	Accession
Guyana		19 Oct 1993 (W)	Accession
Haiti	1 Jul 1968 (W)	2 Jun 1970 (W)	Ratification
Holy See		25 Feb 1971 (L, M, W)	Accession
Honduras	1 Jul 1968 (W)	16 May 1973 (W)	Ratification
Hungary	1 Jul 1968 (L, M, W)	27 May 1969 (L, M, W)	Ratification
Iceland	1 Jul 1968 (L, M, W)	18 Jul 1969 (L, M, W)	Ratification
Indonesia	2 Mar 1970 (L, M, W)	12 Jul 1979 (L, M, W)	Ratification
Iran	1 Jul 1968 (L, M, W)	2 Feb 1970 (W) 10 Feb 1970 (M) 5 Mar 1970 (L)	Ratification
Iraq	1 Jul 1968 (M)	29 Oct 1969 (M)	Ratification
Ireland	1 Jul 1968 (M, W) 4 Jul 1968 (L)	1 Jul 1968 (W) 2 Jul 1968 (M) 4 Jul 1968 (L)	Ratification
Italy	28 Jan 1969 (L, M, W)	2 May 1975 (L, W) 4 May 1975 (M)	Ratification
Jamaica	14 Apr 1969 (L, M, W)	5 Mar 1970 (L, M, W)	Ratification
Japan	3 Feb 1970 (L, M, W)	8 Jun 1976 (L, M, W)	Ratification
Jordan	10 Jul 1968 (W)	11 Feb 1970 (W)	Ratification
Kazakhstan		14 Feb 1994 (W) 21 Mar 1994 (L) 20 May 1994 (M)	Accession
Kenya	1 Jul 1968 (W)	11 Jun 1970 (M)	Ratification
Kiribati		18 Apr 1985 (L)	Succession from   United Kingdom
Kuwait	15 Aug 1968 (M, W) 22 Aug 1968 (L)	17 Nov 1989 (W)	Ratification
Kyrgyzstan		5 Jul 1994 (M)	Accession
Laos	1 Jul 1968 (L, M, W)	20 Feb 1970 (M) 5 Mar 1970 (L, W)	Ratification
Latvia		31 Jan 1992 (L)	Accession
Lebanon	1 Jul 1968 (L, M, W)	15 Jul 1970 (L, M) 20 Nov 1970 (W)	Ratification
Lesotho	9 Jul 1968 (W)	20 May 1970 (W)	Ratification
Liberia	1 Jul 1968 (W)	5 Mar 1970 (W)	Ratification
Libya	18 Jul 1968 (L) 19 Jul 1968 (W) 23 Jul 1968 (M)	26 May 1975 (L, M, W)	Ratification
Liechtenstein		20 Apr 1978 (L, M, W)	Accession
Lithuania		23 Sep 1991 (L, W)	Accession
Luxembourg	14 Aug 1968 (L, M, W)	2 May 1975 (L, W) 4 May 1975 (M)	Ratification
North Macedonia		30 Mar 1995 (L) 12 Apr 1995 (W)	Succession from   SFR Yugoslavia
Madagascar	22 Aug 1968 (W)	8 Oct 1970 (W)	Ratification
Malawi		18 Feb 1986 (L) 19 Feb 1986 (W) 4 Mar 1986 (M)	Accession
Malaysia	1 Jul 1968 (L, M, W)	5 Mar 1970 (L, M, W)	Ratification
Maldives	11 Sep 1968 (W)	7 Apr 1970 (W)	Ratification
Mali	14 Jul 1969 (W) 15 Jul 1969 (M)	10 Feb 1970 (M) 5 Mar 1970 (W)	Ratification
Malta	17 Apr 1969 (W)	6 Feb 1970 (W)	Ratification
Marshall Islands		30 Jan 1995 (W)	Accession
Mauritania		26 Oct 1993 (W)	Accession
Mauritius	1 Jul 1968 (W)	8 Apr 1969 (W) 14 Apr 1969 (L) 25 Apr 1969 (M)	Ratification
Mexico	26 Jul 1968 (L, M, W)	21 Jan 1969 (L, M, W)	Ratification
Federated States of Micronesia		14 Apr 1995 (W)	Accession
Moldova		11 Oct 1994 (W)	Accession
Monaco		13 Mar 1995 (W)	Accession
Mongolia	1 Jul 1968 (M)	14 May 1969 (M)	Ratification
Montenegro		3 Jun 2006 (M) 12 Dec 2006 (L)	Succession from   Serbia and Montenegro
Morocco	1 Jul 1968 (L, M, W)	27 Nov 1970 (M) 30 Nov 1970 (L) 16 Dec 1970 (W)	Ratification
Mozambique		4 Sep 1990 (M) 12 Sep 1990 (W) 20 Sep 1990 (L)	Accession
Myanmar		2 Dec 1992 (W)	Accession
Namibia		2 Oct 1992 (L) 7 Oct 1992 (W) 9 Oct 1992 (M)	Accession
Nauru		7 Jun 1982 (L)	Accession
Nepal	1 Jul 1968 (L, M, W)	5 Jan 1970 (W) 9 Jan 1970 (M) 3 Feb 1970 (L)	Ratification
Netherlands	20 Aug 1968 (L, M, W)	2 May 1975 (L, M, W)	Ratification
New Zealand	1 Jul 1968 (L, M, W)	10 Sep 1969 (L, M, W)	Ratification
Nicaragua	1 Jul 1968 (L, W)	6 Mar 1973 (W)	Ratification
Niger		9 Oct 1992 (W)	Accession
Nigeria	1 Jul 1968 (L, M, W)	27 Sep 1968 (L) 7 Oct 1968 (W) 14 Oct 1968 (M)	Ratification
Norway	1 Jul 1968 (L, M, W)	5 Feb 1969 (L, M, W)	Ratification
Oman		23 Jan 1997 (W)	Accession
Palau		14 Apr 1995 (W)	Accession
Palestine		10 Feb 2015 (M) 12 Feb 2015 (L)	Accession
Panama	1 Jul 1968 (W)	13 Jan 1977 (W)	Ratification
Papua New Guinea		13 Jan 1982 (L) 25 Jan 1982 (W) 16 Feb 1982 (M)	Accession
Paraguay	1 Jul 1968 (W)	4 Feb 1970 (W) 5 Mar 1970 (L)	Ratification
Peru	1 Jul 1968 (W)	3 Mar 1970 (W)	Ratification
Philippines	1 Jul 1968 (W) 18 Jul 1968 (M)	5 Oct 1972 (W) 16 Oct 1972 (L) 20 Oct 1972 (M)	Ratification
Poland	1 Jul 1968 (L, M, W)	12 Jun 1969 (L, M, W)	Ratification
Portugal		15 Dec 1977 (L, M, W)	Accession
Qatar		3 Apr 1989 (L) 10 May 1989 (M) 13 Jun 1989 (W)	Accession
South Korea	1 Jul 1968 (W)	23 Apr 1975 (W)	Ratification
Romania	1 Jul 1968 (L, M, W)	4 Feb 1970 (L, M, W)	Ratification
Russia	1 Jul 1968 (L, M, W)	5 Mar 1970 (L, M, W)	Ratification as   Soviet Union
Rwanda		20 May 1975 (L, M, W)	Accession
Saint Kitts and Nevis		22 Mar 1993 (W)	Accession
Saint Lucia		28 Dec 1979 (L)	Succession from   United Kingdom
Saint Vincent and the Grenadines		6 Nov 1984 (L)	Succession from   United Kingdom
Samoa		17 Mar 1975 (M) 18 Mar 1975 (W) 26 Mar 1975 (L)	Accession
San Marino	1 Jul 1968 (W) 29 Jul 1968 (L) 21 Nov 1968 (M)	10 Aug 1970 (L) 20 Aug 1970 (M) 31 Aug 1970 (W)	Ratification
Sao Tome and Principe		20 Jul 1983 (M)	Accession
Saudi Arabia		3 Oct 1988 (W)	Accession
Senegal	1 Jul 1968 (M, W) 26 Jul 1968 (L)	17 Dec 1970 (M) 22 Dec 1970 (W) 15 Jan 1971 (L)	Ratification
Serbia		27 Apr 1992 (M) 5 Sep 2001 (W) 3 Jun 2006 (L)	Succession from   SFR Yugoslavia Signed 10 July 1968 (L, M, W) Deposited 4 March 1970 (W), 5 March 1970 (L, M) [11] Succession from   Serbia and Montenegro
Seychelles		12 Mar 1985 (L) 14 Mar 1985 (M) 8 Apr 1985 (W)	Accession
Sierra Leone		26 Feb 1975 (L, M, W)	Accession
Singapore	5 Feb 1970 (L, M, W)	10 Mar 1976 (L, M, W)	Ratification
Slovakia		1 Jan 1993 (M, W) 17 Apr 1993 (L)	Succession from   Czechoslovakia Signed 1 July 1968 Deposited 22 July 1969
Slovenia		7 Apr 1992 (L) 20 Aug 1992 (W)	Succession from   SFR Yugoslavia
Solomon Islands		17 Jun 1981 (L)	Succession from   United Kingdom
Somalia	1 Jul 1968 (L, M, W)	5 Mar 1970 (L) 12 Nov 1970 (W)	Ratification
South Africa		10 Jul 1991 (W)	Accession
Spain		5 Nov 1987 (L, M, W)	Accession
Sri Lanka	1 Jul 1968 (L, M, W)	5 Mar 1979 (L, M, W)	Ratification
Sudan	24 Dec 1968 (M)	31 Oct 1973 (W) 22 Nov 1973 (M) 10 Dec 1973 (L)	Ratification
Suriname		30 Jun 1976 (W)	Succession from   Netherlands
Swaziland	24 Jun 1969 (L)	11 Dec 1969 (L) 16 Dec 1969 (W) 12 Jan 1970 (M)	Ratification
Sweden	19 Aug 1968 (L, M, W)	9 Jan 1970 (L, M, W)	Ratification
Switzerland	27 Nov 1969 (L, M, W)	9 Mar 1977 (L, M, W)	Ratification
Syria	1 Jul 1968 (M)	24 Sep 1969 (M)	Ratification
Tajikistan		17 Jan 1995 (M)	Accession
Tanzania		31 May 1991 (L) 7 Jun 1991 (W) 18 Jun 1991 (M)	Accession
Thailand		7 Dec 1972 (L)	Accession
Timor-Leste		5 May 2003 (W)	Accession
Togo	1 Jul 1968 (W)	27 Feb 1970 (W)	Ratification
Tonga		7 Jul 1971 (L) 15 Jul 1971 (W) 24 Aug 1971 (M)	Succession from   United Kingdom
Trinidad and Tobago	20 Aug 1968 (W) 22 Aug 1968 (L)	30 Oct 1986 (L, W)	Ratification
Tunisia	1 Jul 1968 (L, M, W)	26 Feb 1970 (L, M, W)	Ratification
Turkey	28 Jan 1969 (L, M, W)	17 Apr 1980 (L, M, W)	Ratification
Turkmenistan		29 Sep 1994 (W)	Accession
Tuvalu		19 Jan 1979 (L)	Succession from   United Kingdom
Uganda		20 Oct 1982 (W)	Accession
Ukraine		5 Dec 1994 (L, M, W)	Accession
United Arab Emirates		26 Sep 1995 (W)	Accession
United Kingdom	1 Jul 1968 (L, M, W)	27 Nov 1968 (L, W) 29 Nov 1968 (M)	Ratification
United States	1 Jul 1968 (L, M, W)	5 Mar 1970 (L, M, W)	Ratification
Uruguay	1 Jul 1968 (W)	31 Aug 1970 (W)	Ratification
Uzbekistan		7 May 1992 (M)	Accession
Vanuatu		24 Aug 1995 (L)	Accession
Venezuela	1 Jul 1968 (W)	25 Sep 1975 (L) 26 Sep 1975 (W) 3 Oct 1975 (M)	Ratification
Vietnam		14 Jun 1982 (M)	Accession as the   Socialist Republic of Vietnam Signed by the   Republic of Vietnam on 1 July 1968, and ratified on 10 September 1971, but following the victory by the Democratic Republic of Vietnam in the Vietnam War, the reunified Socialist Republic of Vietnam renounced all treaty actions performed by the Republic of Vietnam. [9]
Yemen	23 Sep 1968 (M)	14 May 1986 (L) 26 Jan 1989 (M)	Ratification as   North Yemen (L) and   South Yemen (M) prior to Yemeni unification.
Zambia		15 May 1991 (W) 22 May 1991 (L) 5 Jul 1991 (M)	Accession
Zimbabwe		26 Sep 1991 (L, M) 4 Oct 1991 (W)	Accession

Partially recognized state abiding by treaty

The Republic of China (Taiwan), which is currently only recognized by 12 UN member states, ratified the treaty prior to the United Nations General Assembly's vote to transfer China's seat to the People's Republic of China (PRC) in 1971. When the PRC subsequently ratified the treaty, they described the Republic of China's (ROC) ratification as "illegal". The ROC has committed itself to continue to adhere to the requirements of the treaty, and the United States has declared that it still regards the authorities in Taiwan to be bound by the NPT's obligations. ^{[9] [12]}

State [9]	Signed	Deposited	Method
Republic of China	1 Jul 1968 (W)	27 Jan 1970 (W)	Ratification

Withdrawn state

Article X.1 allows a state to leave the treaty if "extraordinary events, related to the subject matter of this Treaty, have jeopardized the supreme interests of its country", giving three months notice. The state is required to give reasons for leaving the NPT in this notice, and to provide this notice to other NPT Parties and to the UN Security Council. This Article does not provide for other states to question a state's interpretation of "supreme interests of its country".

North Korea acceded to the NPT in 1985. On 12 March 1993, after it was found in non-compliance with its safeguards agreement, North Korea gave notice to withdraw from the NPT. However, on 11 June 1993, one day before the withdrawal was to take effect, North Korea reached agreement with the United States to freeze its nuclear program under the Agreed Framework and "suspended" its withdrawal notice. ^[13] In October 2002, the United States accused North Korea of violating the Agreed Framework by pursuing a secret uranium enrichment program, and suspended shipments of heavy fuel oil under that agreement. In response, North Korea expelled IAEA inspectors, disabled IAEA equipment and, on 10 January 2003, announced that it was ending the suspension of its previous NPT withdrawal notification. ^{[1] [2]} There is disagreement among the parties to the treaty whether North Korea's withdrawal was in conformity with the terms of the treaty. ^{[14] [2]} North Korea said that only one more day's notice was sufficient for withdrawal from the NPT, as it had given 89 days before. ^[15] The IAEA Board of Governors rejected this interpretation. ^[16] Most countries held that a new three-months withdrawal notice was required, and some^{[ who? ]} questioned whether North Korea's notification met the "extraordinary events" and "supreme interests" requirements of the Treaty.^{[ citation needed ]} The Joint Statement of 19 September 2005 at the end of the Fourth Round of the Six-Party Talks called for North Korea to "return" to the NPT, implicitly acknowledging that it had withdrawn. As of October, 2016, North Korea has conducted five announced nuclear tests between October 9, 2006, to September 9, 2016. ^[17]

In 2020, Iran threatened to withdraw from the NPT if it is referred to the United Nations Security Council for alleged breaching the Joint Comprehensive Plan of Action. ^[18]

State	Deposited	Method	Withdrew	Effective
North Korea	12 Dec 1985 (M)	Accession	12 Mar 1993 (M) [19]	Suspended 11 June 1993 [13]
			10 Jan 2003	10 Apr 2003 [20]

Other states

Four UN member states have never been a party to the treaty.

The Cook Islands and Niue, two associated states of New Zealand which have had their "full treaty-making capacity" recognised by United Nations Secretariat, ^[5] are not parties to the treaty but consider themselves bound by its provisions by virtue of their administration by New Zealand when the latter ratified the NPT. ^[6]

•   India
•   Israel
•   Pakistan
•   South Sudan

See also

• List of parties to the Biological Weapons Convention
• List of parties to the Chemical Weapons Convention
• List of parties to the Convention on Certain Conventional Weapons
• List of parties to the Comprehensive Nuclear-Test-Ban Treaty
• List of parties to the Ottawa Treaty
• List of parties to the Partial Nuclear Test Ban Treaty
• List of parties to the Treaty on the Prohibition of Nuclear Weapons
• List of parties to weapons of mass destruction treaties

References

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2. "Democratic People's Republic of Korea: Accession to Treaty on the Non-Proliferation of Nuclear Weapons (NPT)". United Nations Office for Disarmament Affairs . Retrieved 2013-03-01.
3. Jean du Preez and William Potter. "North Korea's Withdrawal From the NPT: A Reality Check". James Martin Center for Nonproliferation Studies (CNS) Information & Analysis. Archived from the original on 2010-04-07. Retrieved 2008-07-26.
4. "Safeguards Statement for 2011" (PDF). IAEA. Retrieved 6 March 2013.
5. "Organs Supplement", Repertory of Practice (PDF), UN, p. 10, archived from the original (PDF) on 2012-04-03
6. Avenhaus, Rudolf; Kremenyuk, Viktor; Sjöstedt, Gunnar (2002). Containing the atom. Lexington Books. p. 123. ISBN   9780739103876. ...the Cook Islands and Niue in the South Pacific-and the latter two consider themselves bound by the adherence to the NPT by New Zealand administering these two states when the NPT entered into force.
7. "Treaty on the Non-Proliferation of Nuclear Weapons". United Nations Office for Disarmament Affairs . Retrieved 2013-02-28.
8. "Treaty on the Non-Proliferation of Nuclear Weapons". Foreign and Commonwealth Office. Archived from the original (PDF) on 2013-01-04. Retrieved 2013-07-23.
   "Treaty on the Non-Proliferation of Nuclear Weapons [London Version]". Foreign and Commonwealth Office . Retrieved 2019-04-27.
9. "Treaty on the Non-Proliferation of Nuclear Weapons". United States Department of State. 2010-10-06. Retrieved 2019-07-01.
10. Договор о нераспространении ядерного оружия (in Russian). Ministry of Foreign Affairs of Russia. 2012-03-05. Retrieved 2015-08-28.
11. "Serbia: Succession to Treaty on the Non-Proliferation of Nuclear Weapons (NPT)". United Nations Office for Disarmament Affairs . Retrieved 2013-03-02.
12. "China: Accession to Treaty on the Non-Proliferation of Nuclear Weapons (NPT)". United Nations Office for Disarmament Affairs . Retrieved 2013-03-03.
13. "IAEA and DPRK: Chronology of Key Events". International Atomic Energy Agency. 25 July 2014. Retrieved 2017-11-06.
14. "Fact Sheet on DPRK Nuclear Safeguards". International Atomic Energy Agency. 2017-11-06. Retrieved 2017-11-06.
15. "North Korea Profile – Nuclear Overview". Nti.org. Archived from the original on 2011-09-22. Retrieved 2010-11-25.
16. "Media Advisory 2003/48 – IAEA Board of Governors Adopts Resolution on Safeguards in North Korea – 12 February". Iaea.org. 12 February 2003. Retrieved 2010-11-25.
17. "A look at North Korea's 6 nuclear tests". USA Today .
18. "Iran to quit NPT if its nuclear programme referred to UN: Zarif". Al Jazeera. 2020-01-20. Retrieved 2020-01-20.
19. "UNTC". 2017-11-07. Retrieved 2017-11-07.
20. Devon Chaffee (2003-04-10). "North Korea's Withdrawal from Nonproliferation Treaty Official". Archived from the original on 2006-04-12. Retrieved 2008-07-26.