Treaty on the Prohibition of the Emplacement of Nuclear Weapons and other Weapons of Mass Destruction on the Sea-Bed and the Ocean Floor and in the Subsoil thereof (London Version) (Feb. 11, 1971)

Countries/Territories	Entry into force	Ratification *	Simple signature
Afghanistan	May 18, 1972	Apr 22, 1971 [1]	Feb 11, 1971
Antigua and Barbuda	Nov 1, 1981	Jan 26, 1989 [4]	-
Argentina	Mar 21, 1983	Mar 21, 1983 [1]	Sep 3, 1971
Australia	Jan 23, 1973	Jan 23, 1973 [1]	Feb 11, 1971
Austria	Aug 10, 1972	Aug 10, 1972 [1]	Feb 11, 1971
Bahamas	Jul 10, 1973	Jul 10, 1973 [4]	-
Belgium	Nov 20, 1972	Nov 20, 1972 [1]	Feb 11, 1971
Benin	Jul 2, 1986	Jul 2, 1986 [1]	-
Bolivia (Plurinational State of)	-	-	Feb 11, 1971
Brazil	May 10, 1988	May 10, 1988 [1]	Sep 3, 1971
Bulgaria	May 18, 1972	May 26, 1971 [1]	Feb 11, 1971
Canada	May 18, 1972	May 17, 1972 [1]	Feb 11, 1971
China	Feb 28, 1991	Feb 28, 1991 [2]	-
Cyprus	May 18, 1972	Nov 17, 1971 [1]	Feb 11, 1971
Czech Republic	Jan 1, 1993	Apr 5, 1993 [4]	-
Denmark	May 18, 1972	Jun 15, 1971 [1]	Feb 11, 1971
Ethiopia	Jul 12, 1977	Jul 12, 1977 [1]	Feb 11, 1971
Finland	May 18, 1972	Jun 8, 1971 [1]	Feb 11, 1971
Gambia	-	-	May 18, 1971
Germany	Nov 18, 1975	Nov 18, 1975 [1]	Jun 8, 1971
Ghana	-	-	Feb 11, 1971
Greece	May 28, 1985	May 28, 1985 [1]	-
Hungary	May 18, 1972	Aug 13, 1971 [1]	Feb 11, 1971
Iceland	May 30, 1972	May 30, 1972 [1]	Feb 11, 1971
India	Jul 20, 1973	Jul 20, 1973 [2]	-
Iran, Islamic Republic of	May 18, 1972	Aug 26, 1971 [1]	Feb 11, 1971
Ireland	May 18, 1972	Aug 19, 1971 [1]	Feb 11, 1971
Italy	Sep 3, 1974	Sep 3, 1974 [1]	Feb 11, 1971
Jamaica	Jul 30, 1986	Jul 30, 1986 [1]	Oct 11, 1971
Japan	May 18, 1972	Jun 21, 1971 [1]	Feb 11, 1971
Jordan	May 18, 1972	Nov 1, 1971 [1]	Feb 11, 1971
Lao, People's Dem. Rep.	May 18, 1972	Oct 19, 1971 [1]	Feb 11, 1971
Latvia	Jun 24, 1992	Jun 24, 1992 [2]	-
Lebanon	-	-	Feb 11, 1971
Liechtenstein	May 30, 1991	May 30, 1991 [2]	-
Luxembourg	Nov 11, 1982	Nov 11, 1982 [1]	Feb 11, 1971
Malaysia	Jun 21, 1972	Jun 21, 1972 [1]	May 20, 1971
Malta	May 18, 1972	May 3, 1971 [1]	Feb 11, 1971
Mexico	Mar 23, 1984	Mar 23, 1984 [2]	-
Mongolia	May 18, 1972	Nov 15, 1971 [1]	Feb 11, 1971
Morocco	May 18, 1972	Jul 26, 1971 [1]	Feb 18, 1971
Nepal	May 18, 1972	Jul 6, 1971 [1]	Feb 24, 1971
Netherlands	Jan 14, 1976	Jan 14, 1976 [1]	Feb 11, 1971
New Zealand	May 18, 1972	Feb 24, 1972 [1]	Feb 11, 1971
Norway	May 18, 1972	Jun 28, 1971 [1]	Feb 11, 1971
Philippines	Nov 5, 1993	Nov 5, 1993 [2]	-
Poland	May 18, 1972	Nov 15, 1971 [1]	Feb 11, 1971
Portugal	Jun 24, 1975	Jun 24, 1975 [2]	-
Qatar	Nov 12, 1974	Nov 12, 1974 [2]	-
Korea, Republic of	Jun 25, 1987	Jun 25, 1987 [1]	Feb 11, 1971
Romania	Jul 10, 1972	Jul 10, 1972 [1]	Feb 11, 1971
Rwanda	May 20, 1975	May 20, 1975 [1]	-
Sierra Leone	-	-	Feb 11, 1971
Singapore	Sep 10, 1976	Sep 10, 1976 [1]	May 5, 1971
Slovakia	Jan 1, 1993	Jan 1, 1993 [4]	-
Slovenia	Apr 7, 1992	Apr 7, 1992 [4]	-
Solomon Islands	Jul 7, 1978	Jun 17, 1981 [4]	-
South Africa	Nov 26, 1973	Nov 26, 1973 [1]	-
Spain	Jul 15, 1987	Jul 15, 1987 [2]	-
Sweden	May 18, 1972	Apr 28, 1972 [1]	Feb 11, 1971
Switzerland	May 4, 1976	May 4, 1976 [1]	Feb 11, 1971
Tunisia	May 18, 1972	Oct 28, 1971 [1]	Feb 11, 1971
Turkey	Oct 25, 1972	Oct 25, 1972 [1]	Feb 25, 1971
United Kingdom	May 18, 1972	May 18, 1972 [1]	Feb 11, 1971
United States of America	May 18, 1972	May 18, 1972 [1]	Feb 11, 1971
Zambia	Oct 9, 1972	Oct 9, 1972 [2]	-
Bosnia and Herzegovina	Aug 15, 1994	Aug 15, 1994 [4]	-
Montenegro	Jun 3, 2006	Dec 12, 2006 [4]	-
Saint Vincent and the Grenadines	Oct 27, 1979	May 13, 1999 [4]	-
Sudan	-	-	Feb 11, 1971
Myanmar	-	-	Feb 11, 1971
Czechoslovakia	May 18, 1972	Jan 11, 1972 [1]	Feb 11, 1971
Grenada	Feb 7, 1974	Feb 7, 1974 [4]	-
Seychelles	Mar 12, 1985	Mar 12, 1985 [2]	-
former USSR/Soviet Union	May 18, 1972	May 18, 1972 [1]	Feb 11, 1971
Yugoslavia	Oct 25, 1973	Oct 25, 1973 [1]	Mar 2, 1971

* [1] Ratification [2] Accession/approbation [3] Acceptance/approval [4] Succession [5] Consent to be bound [6] Definite signature