Treaty on the Non-Proliferation of Nuclear Weapons

Opened for signature at London, Moscow and Washington: 1 July 1968 
 
Entered into force: 5 March 1970 
 
Depositary Governments: Russian Federation, United Kingdom of Great Britain and Northern Ireland, and United States of America
 
 
State Signature Deposit Deposit Type
Afghanistan 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
4 February 1970  
5 February 1970  
5 March 1970  
Washington
Moscow
London
Ratification
Ratification
Ratification
Albania 12 September 1990  
14 September 1990  
28 September 1990  
London
Moscow
Washington
Accession
Accession
Accession
Algeria 12 January 1995  
12 January 1995  
12 January 1995  
London
Moscow
Washington
Accession
Accession
Accession
Andorra 7 June 1986  
25 June 1996  
2 July 1996  
London
Washington
Moscow
Accession
Accession
Accession
Angola 14 October 1996  
30 April 2010  
Washington
Moscow
Accession
Accession
Antigua and Barbuda 17 June 1985  
London
Succession
Argentina 10 February 1995 *
17 February 1995  
Washington
London
Accession
Accession
Armenia 21 June 1993  
15 July 1993  
Moscow
Washington
Accession
Accession
Australia 27 February 1970 *
27 February 1970 *
27 February 1970  
London
Moscow
Washington
23 January 1973  
23 January 1973 *
23 January 1973 *
London
Moscow
Washington
Ratification
Ratification
Ratification
Austria 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
27 June 1969  
27 June 1969  
28 June 1969  
London
Washington
Moscow
Ratification
Ratification
Ratification
Azerbaijan 22 September 1992  
Moscow
Accession
Bahamas 11 August 1976 *
13 August 1976 *
30 August 1976 *
London
Washington
Moscow
Succession
Succession
Succession
Bahrain 3 November 1988 *
Washington
Accession
Bangladesh 31 August 1979  
31 August 1979  
27 September 1979  
London
Moscow
Washington
Accession
Accession
Accession
Barbados 1 July 1968  
Washington
21 February 1980  
Washington
Ratification
Belarus 9 February 1993  
22 July 1993  
23 July 1993  
Moscow
Washington
London
Accession
Accession
Accession
Belgium 20 August 1968  
20 August 1968  
20 August 1968  
London
Moscow
Washington
2 May 1975  
2 May 1975  
4 May 1975  
London
Washington
Moscow
Ratification
Ratification
Ratification
Belize 9 August 1985  
London
Succession
Benin 1 July 1968  
Washington
31 October 1972  
Washington
Ratification
Bhutan 23 May 1985  
Washington
Accession
Bolivia (Plurinational State of) 1 July 1968  
Washington
26 May 1970  
Washington
Ratification
Bosnia and Herzegovina 15 August 1994 *
Washington
Succession
Botswana 1 July 1968  
Washington
28 April 1969  
London
Ratification
Brazil 18 September 1998 *
18 September 1998  
18 September 1998  
London
Moscow
Washington
Accession
Accession
Accession
Brunei Darussalam 26 March 1985  
Washington
Accession
Bulgaria 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
5 September 1969  
18 September 1969  
3 November 1969  
Washington
Moscow
London
Ratification
Ratification
Ratification
Burkina Faso 25 November 1968  
11 August 1969  
Washington
Moscow
3 March 1970  
Washington
Ratification
Burundi 19 March 1971  
Moscow
Accession
Cambodia 2 June 1972  
25 September 1987  
Washington
Moscow
Accession
Accession
Cameroon 17 July 1968  
18 July 1968  
Washington
Moscow
8 January 1969  
Washington
Ratification
Canada 23 July 1968  
23 July 1968  
29 July 1968  
London
Washington
Moscow
8 January 1969  
8 January 1969  
8 January 1969  
London
Moscow
Washington
Ratification
Ratification
Ratification
Cape Verde 24 October 1979  
Moscow
Accession
Central African Republic 25 October 1970  
Washington
Accession
Chad 1 July 1968  
Moscow
10 March 1971 *
11 March 1971  
23 March 1971  
Washington
Moscow
London
Ratification
Ratification
Ratification
Chile 25 May 1995  
Washington
Accession
China 9 March 1992 *
12 March 1992 *
17 March 1992 *
London
Moscow
Washington
Accession
Accession
Accession
Colombia 1 July 1968  
Washington
8 April 1986  
29 April 1986  
30 April 1986  
Washington
Moscow
London
Ratification
Ratification
Ratification
Comoros 4 October 1995  
Washington
Accession
Congo 26 July 1968  
Moscow
23 October 1978  
Washington
Ratification
Costa Rica 1 July 1968  
Washington
3 March 1970  
Washington
Ratification
Côte d'Ivoire 1 July 1968  
Washington
6 March 1973  
Washington
Ratification
Croatia 29 June 1992 *
Washington
Succession
Cuba 4 November 2002 *
Moscow
Accession
Cyprus 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
10 February 1970  
16 February 1970  
5 March 1970  
Moscow
Washington
London
Ratification
Ratification
Ratification
Czech Republic 1 January 1993 *
1 January 1993 *
5 April 1993 *
Moscow
Washington
London
Succession
Succession
Succession
Democratic People's Republic of Korea 12 December 1985 *
Moscow
Accession
Democratic Republic of the Congo 22 July 1968  
17 September 1968  
Washington
London
4 August 1970  
Washington
Ratification
Denmark 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
3 January 1969  
3 January 1969  
3 January 1969  
London
Moscow
Washington
Ratification
Ratification
Ratification
Djibouti 16 October 1996  
Washington
Accession
Dominica 10 August 1984  
London
Succession
Dominican Republic 1 July 1968  
Washington
24 July 1971  
Washington
Ratification
Ecuador 9 July 1968  
Washington
7 March 1969  
Washington
Ratification
Egypt 1 July 1968  
1 July 1968  
London
Moscow
26 February 1981 *
London
Ratification
El Salvador 1 July 1968  
Washington
11 July 1972  
Washington
Ratification
Equatorial Guinea 1 November 1984  
Washington
Accession
Eritrea 16 March 1995  
Washington
Accession
Estonia 7 January 1992  
31 January 1992  
London
Washington
Accession
Accession
Ethiopia 5 September 1968  
5 September 1968  
5 September 1968  
London
Moscow
Washington
5 February 1970  
5 March 1970  
5 March 1970  
Moscow
London
Washington
Ratification
Ratification
Ratification
Fiji 21 July 1972  
14 August 1972 *
29 August 1972 *
Washington
London
Moscow
Accession
Succession
Succession
Finland 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
5 February 1969  
5 February 1969  
5 February 1970  
Moscow
Washington
London
Ratification
Ratification
Ratification
France 2 August 1992  
3 August 1992  
3 August 1992  
Moscow
London
Washington
Accession
Accession
Accession
Gabon 19 February 1974  
Washington
Accession
Gambia 4 September 1968  
20 September 1968  
24 September 1968  
London
Washington
Moscow
12 May 1975  
Washington
Ratification
Georgia 7 March 1994  
Washington
Accession
Germany 28 November 1969 *
28 November 1969 *
28 November 1969  
London
Moscow
Washington
2 May 1975 *
2 May 1975 *
London
Washington
Ratification
Ratification
Ghana 1 July 1968  
1 July 1968  
24 July 1968  
Moscow
Washington
London
4 May 1970  
5 May 1970  
11 May 1970  
London
Washington
Moscow
Ratification
Ratification
Ratification
Greece 1 July 1968  
1 July 1968  
Moscow
Washington
11 March 1970  
Washington
Ratification
Grenada 2 September 1975 *
3 December 1975 *
London
Washington
Succession
Succession
Guatemala 26 July 1968  
Washington
22 September 1970  
Washington
Ratification
Guinea 29 April 1985  
Moscow
Accession
Guinea-Bissau 20 August 1976  
Moscow
Accession
Guyana 19 October 1993  
Washington
Accession
Haiti 1 July 1968  
Washington
2 June 1970  
Washington
Ratification
Holy See 25 February 1971 *
25 February 1971 *
25 February 1971 *
London
Moscow
Washington
Accession
Accession
Accession
Honduras 1 July 1968  
Washington
16 May 1973  
Washington
Ratification
Hungary 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
27 May 1969 *
27 May 1969  
27 May 1969  
London
Moscow
Washington
Ratification
Ratification
Ratification
Iceland 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
18 July 1969  
18 July 1969  
18 July 1969  
London
Moscow
Washington
Ratification
Ratification
Ratification
Indonesia 2 March 1970 *
2 March 1970  
2 March 1970  
London
Moscow
Washington
12 July 1979 *
12 July 1979 *
12 July 1979 *
London
Moscow
Washington
Ratification
Ratification
Ratification
Iran (Islamic Republic of) 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
2 February 1970  
10 February 1970  
5 March 1970  
Washington
Moscow
London
Ratification
Ratification
Ratification
Iraq 1 July 1968  
Moscow
29 October 1969  
Moscow
Ratification
Ireland 1 July 1968  
1 July 1968  
4 July 1968  
Moscow
Washington
London
1 July 1968  
2 July 1968  
4 July 1968  
Washington
Moscow
London
Ratification
Ratification
Ratification
Italy 28 January 1969 *
28 January 1969  
28 January 1969  
London
Moscow
Washington
2 May 1975  
2 May 1975  
4 May 1975 *
London
Washington
Moscow
Ratification
Ratification
Ratification
Jamaica 14 April 1969  
14 April 1969  
14 April 1969  
London
Moscow
Washington
5 March 1970  
5 March 1970  
5 March 1970  
London
Moscow
Washington
Ratification
Ratification
Ratification
Japan 3 February 1970 *
3 February 1970  
3 February 1970  
London
Moscow
Washington
8 June 1976  
8 June 1976 *
8 June 1976 *
London
Moscow
Washington
Ratification
Ratification
Ratification
Jordan 10 July 1968  
Washington
11 February 1970  
Washington
Ratification
Kazakhstan 14 February 1994  
21 March 1994  
20 May 1994  
Washington
London
Moscow
Accession
Accession
Accession
Kenya 1 July 1968  
Washington
11 June 1970  
Moscow
Ratification
Kiribati 18 April 1975  
London
Succession
Kuwait 15 August 1968  
15 August 1968  
22 August 1968  
Moscow
Washington
London
17 November 1989 *
Washington
Ratification
Kyrgyzstan 5 July 1994  
Moscow
Accession
Lao People's Democratic Republic 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
20 February 1970  
5 March 1970  
5 March 1970  
Moscow
London
Washington
Ratification
Ratification
Ratification
Latvia 31 January 1992  
London
Accession
Lebanon 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
15 July 1970  
15 July 1970  
20 November 1970  
London
Moscow
Washington
Ratification
Ratification
Ratification
Lesotho 9 July 1968  
Washington
20 May 1970  
Washington
Ratification
Liberia 1 July 1968  
Washington
5 March 1970  
Washington
Ratification
Libya 18 July 1968  
19 July 1968  
23 July 1968  
London
Washington
Moscow
26 May 1975  
26 May 1975  
26 May 1975  
London
Moscow
Washington
Ratification
Ratification
Ratification
Liechtenstein 20 April 1978 *
20 April 1978 *
20 April 1978 *
London
Moscow
Washington
Accession
Accession
Accession
Lithuania 23 September 1991  
23 September 1991  
London
Washington
Accession
Accession
Luxembourg 14 August 1968  
14 August 1968  
14 August 1968  
London
Moscow
Washington
2 May 1975  
2 May 1975  
4 May 1975  
London
Washington
Moscow
Ratification
Ratification
Ratification
Madagascar 22 August 1968  
Washington
8 October 1970  
Washington
Ratification
Malawi 18 February 1986  
19 February 1986  
4 March 1986  
London
Washington
Moscow
Accession
Accession
Accession
Malaysia 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
5 March 1970  
5 March 1970  
5 March 1970  
London
Moscow
Washington
Ratification
Ratification
Ratification
Maldives 11 September 1968  
Washington
7 April 1970  
Washington
Ratification
Mali 14 July 1969  
15 July 1969  
Washington
Moscow
10 February 1970  
5 March 1970  
Moscow
Washington
Ratification
Ratification
Malta 17 April 1969  
Washington
6 February 1970  
Washington
Ratification
Marshall Islands 30 January 1995  
Washington
Accession
Mauritania 26 October 1993  
Washington
Accession
Mauritius 1 July 1968  
Washington
8 April 1969  
14 April 1969  
25 April 1969  
Washington
London
Moscow
Ratification
Ratification
Ratification
Mexico 26 July 1968 *
26 July 1968  
26 July 1968  
London
Moscow
Washington
21 January 1969  
21 January 1969 *
21 January 1969 *
London
Moscow
Washington
Ratification
Ratification
Ratification
Micronesia (Federated States of) 14 April 1995  
Washington
Accession
Monaco 13 March 1995  
Washington
Accession
Mongolia 1 July 1968  
Moscow
14 May 1969 *
Moscow
Ratification
Montenegro 3 June 2006 *
12 December 2006 *
Moscow
London
Succession
Succession
Morocco 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
27 November 1970  
30 November 1970  
16 December 1970  
Moscow
London
Washington
Ratification
Ratification
Ratification
Mozambique 4 September 1990  
12 September 1990  
20 September 1990  
Moscow
Washington
London
Accession
Accession
Accession
Myanmar 2 December 1992  
Washington
Accession
Namibia 2 October 1992  
7 October 1992  
9 October 1992  
London
Washington
Moscow
Accession
Accession
Accession
Nauru 7 June 1982  
London
Accession
Nepal 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
5 January 1970  
9 January 1970  
3 February 1970  
Washington
Moscow
London
Ratification
Ratification
Ratification
Netherlands 20 August 1968  
20 August 1968  
20 August 1968  
London
Moscow
Washington
2 May 1975  
2 May 1975  
2 May 1975 *
London
Moscow
Washington
Ratification
Ratification
Ratification
New Zealand 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
10 September 1969  
10 September 1969  
10 September 1969  
London
Moscow
Washington
Ratification
Ratification
Ratification
Nicaragua 1 July 1968  
1 July 1968  
London
Washington
6 March 1973  
Washington
Ratification
Niger 9 October 1992  
Washington
Accession
Nigeria 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
27 September 1968  
7 October 1968  
14 October 1968  
London
Washington
Moscow
Ratification
Ratification
Ratification
Norway 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
5 February 1969  
5 February 1969  
5 February 1969  
London
Moscow
Washington
Ratification
Ratification
Ratification
Oman 23 January 1997  
Washington
Accession
Palau 14 April 1995  
Washington
Accession
Panama 1 July 1968  
Washington
13 January 1977  
Washington
Ratification
Papua New Guinea 13 January 1982  
25 January 1982  
16 February 1982  
London
Washington
Moscow
Accession
Accession
Accession
Paraguay 1 July 1968  
Washington
4 February 1970  
5 March 1970  
Washington
London
Ratification
Ratification
Peru 1 July 1968  
Washington
3 March 1970  
Washington
Ratification
Philippines 1 July 1968  
18 July 1968  
Washington
Moscow
5 October 1972  
16 October 1972  
20 October 1972  
Washington
London
Moscow
Ratification
Ratification
Ratification
Poland 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
12 June 1969  
12 June 1969  
12 June 1969  
London
Moscow
Washington
Ratification
Ratification
Ratification
Portugal 15 December 1977  
15 December 1977  
15 December 1977  
London
Moscow
Washington
Accession
Accession
Accession
Qatar 3 April 1989  
10 May 1989  
13 June 1989  
London
Moscow
Washington
Accession
Accession
Accession
Republic of Korea 1 July 1968  
Washington
23 April 1975 *
Washington
Ratification
Republic of Moldova 11 October 1994  
Washington
Accession
Romania 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
4 February 1970  
4 February 1970  
4 February 1970  
London
Moscow
Washington
Ratification
Ratification
Ratification
Russian Federation 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
5 March 1970  
5 March 1970  
5 March 1970 *
London
Moscow
Washington
Ratification
Ratification
Ratification
Rwanda 20 May 1975  
20 May 1975  
20 May 1975  
London
Moscow
Washington
Accession
Accession
Accession
Saint Kitts and Nevis 22 March 1993  
Washington
Accession
Saint Lucia 28 December 1979  
London
Succession
Saint Vincent and the Grenadines 6 November 1984  
London
Succession
Samoa 17 March 1975  
18 March 1975  
26 March 1975  
Moscow
Washington
London
Accession
Accession
Accession
San Marino 1 July 1968  
29 July 1968  
21 November 1968  
Washington
London
Moscow
10 August 1970  
20 August 1970  
31 August 1970 *
London
Moscow
Washington
Ratification
Ratification
Ratification
Sao Tome and Principe 20 July 1983  
Moscow
Accession
Saudi Arabia 3 October 1988  
Washington
Accession
Senegal 1 July 1968  
1 July 1968  
26 July 1968  
Moscow
Washington
London
17 December 1970  
22 December 1970  
15 January 1971  
Moscow
Washington
London
Ratification
Ratification
Ratification
Serbia 27 April 1992  
5 September 2001 *
3 June 2006 *
Moscow
Washington
London
Succession
Succession
Succession
Seychelles 12 March 1985  
14 March 1985  
8 April 1985  
London
Moscow
Washington
Accession
Accession
Accession
Sierra Leone 26 February 1975  
26 February 1975  
26 February 1975  
London
Moscow
Washington
Accession
Accession
Accession
Singapore 5 February 1970  
5 February 1970  
5 February 1970  
London
Moscow
Washington
10 March 1976  
10 March 1976  
10 March 1976  
London
Moscow
Washington
Ratification
Ratification
Ratification
Slovakia 1 January 1993 *
1 January 1993 *
17 April 1993 *
Moscow
Washington
London
Succession
Succession
Succession
Slovenia 7 April 1992  
20 August 1992 *
London
Washington
Succession
Succession
Solomon Islands 17 June 1981  
London
Succession
Somalia 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
5 March 1970  
12 November 1970  
London
Washington
Ratification
Ratification
South Africa 10 July 1991  
Washington
Accession
Spain 5 November 1987  
5 November 1987  
5 November 1987  
London
Moscow
Washington
Accession
Accession
Accession
Sri Lanka 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
5 March 1979  
5 March 1979  
5 March 1979  
London
Moscow
Washington
Ratification
Ratification
Ratification
Sudan 24 December 1968  
Moscow
31 October 1973 *
22 November 1973  
10 December 1973  
Washington
Moscow
London
Ratification
Ratification
Ratification
Suriname 30 June 1976 *
Washington
Succession
Swaziland 24 June 1969  
London
11 December 1969  
16 December 1969  
12 January 1970 *
London
Washington
Moscow
Ratification
Ratification
Ratification
Sweden 19 August 1968  
19 August 1968  
19 August 1968  
London
Moscow
Washington
9 January 1970  
9 January 1970 *
9 January 1970  
London
Moscow
Washington
Ratification
Ratification
Ratification
Switzerland 27 November 1969 *
27 November 1969  
27 November 1969  
London
Moscow
Washington
9 March 1977 *
9 March 1977  
9 March 1977 *
London
Moscow
Washington
Ratification
Ratification
Ratification
Syrian Arab Republic 1 July 1968  
Moscow
24 September 1969 *
Moscow
Ratification
Tajikistan 17 January 1995  
Moscow
Accession
Thailand 7 December 1972  
London
Accession
The former Yugoslav Republic of Macedonia 30 March 1995  
12 April 1995  
London
Washington
Succession
Succession
Timor-Leste 5 May 2003  
Washington
Accession
Togo 1 July 1968  
Washington
27 February 1970  
Washington
Ratification
Tonga 7 July 1971 *
15 July 1971 *
24 August 1971 *
London
Washington
Moscow
Succession
Succession
Succession
Trinidad and Tobago 20 August 1968  
22 August 1968  
Washington
London
30 October 1986  
30 October 1986  
London
Washington
Ratification
Ratification
Tunisia 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
26 February 1970  
26 February 1970  
26 February 1970  
London
Moscow
Washington
Ratification
Ratification
Ratification
Turkey 28 January 1969  
28 January 1969  
28 January 1969  
London
Moscow
Washington
17 April 1980 *
17 April 1980 *
17 April 1980 *
London
Moscow
Washington
Ratification
Ratification
Ratification
Turkmenistan 29 September 1994  
Washington
Accession
Tuvalu 19 January 1979  
London
Succession
Uganda 20 October 1982  
Washington
Accession
Ukraine 5 December 1994  
5 December 1994 *
5 December 1994  
London
Moscow
Washington
Accession
Accession
Accession
United Arab Emirates 26 September 1995  
Washington
Accession
United Kingdom of Great Britain and Northern Ireland 1 July 1968 *
1 July 1968  
1 July 1968  
London
Moscow
Washington
27 November 1968 *
27 November 1968 *
29 November 1968 *
London
Washington
Moscow
Ratification
Ratification
Ratification
United Republic of Tanzania 31 May 1991  
7 June 1991  
18 June 1991 *
London
Washington
Moscow
Accession
Accession
Accession
United States of America 1 July 1968  
1 July 1968  
1 July 1968  
London
Moscow
Washington
5 March 1970  
5 March 1970  
5 March 1970  
London
Moscow
Washington
Ratification
Ratification
Ratification
Uruguay 1 July 1968  
Washington
31 August 1970  
Washington
Ratification
Uzbekistan 7 May 1992  
Moscow
Accession
Vanuatu 24 August 1995  
London
Accession
Venezuela (Bolivarian Republic of) 1 July 1968  
Washington
25 September 1975  
26 September 1975  
3 October 1975  
London
Washington
Moscow
Ratification
Ratification
Ratification
Viet Nam 14 June 1982 *
Moscow
Accession
Yemen 23 September 1968  
Moscow
14 May 1986  
26 January 1989  
London
Moscow
Ratification
Ratification
Zambia 15 May 1991  
22 May 1991  
5 July 1991  
Washington
London
Moscow
Accession
Accession
Accession
Zimbabwe 26 September 1991  
26 September 1991  
4 October 1991  
London
Moscow
Washington
Accession
Accession
Accession

* A note, statement, declaration, or reservation, is attached to the signature or depository action. Click on the action date to view the details.

  Glossary of treaty-related terms

Number of Signatory States: 93
Number of States Parties: 190