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Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or Other Gases, and of Bacteriological Methods of Warfare (June 17, 1925)

Countries/Territories Entry into force Ratification * Simple signature Withdrawal
Afghanistan Dec 9, 1986 Dec 9, 1986 [1] - -
Albania Dec 20, 1989 Dec 20, 1989 [1] - -
Algeria Jan 14, 1992 Jan 14, 1992 [2] - -
Angola Nov 8, 1990 Nov 8, 1990 [2] - -
Antigua and Barbuda Nov 1, 1981 Nov 1, 1981 [2] - -
Argentina May 12, 1969 May 12, 1969 [2] - -
Australia May 24, 1930 May 24, 1930 [2] - -
Austria May 9, 1928 May 9, 1928 [1] Jun 17, 1925 -
Bahrain Dec 9, 1988 Dec 9, 1988 [2] - -
Bangladesh May 20, 1989 May 20, 1989 [2] - -
Barbados Jul 16, 1976 Jul 16, 1976 [4] - -
Belgium Dec 4, 1928 Dec 4, 1928 [1] Jun 17, 1925 -
Benin Dec 9, 1986 Dec 9, 1986 [2] - -
Bhutan Mar 2, 1979 Jul 6, 1978 [2] - -
Bolivia (Plurinational State of) Aug 13, 1985 Aug 13, 1985 [2] - -
Brazil Aug 28, 1970 Aug 28, 1970 [1] Jun 17, 1925 -
Bulgaria Mar 7, 1934 Mar 7, 1934 [1] Jun 17, 1925 -
Burkina Faso Mar 3, 1971 Mar 3, 1971 [2] - -
Cambodia Mar 15, 1983 Mar 15, 1983 [2] - -
Cameroon Jul 20, 1989 Jul 20, 1989 [2] - -
Canada May 6, 1930 May 6, 1930 [1] Jun 17, 1925 -
Central African Republic Oct 15, 1991 Oct 15, 1991 [2] - -
Chile Jul 31, 1970 Jul 31, 1970 [2] - -
China Jul 2, 1935 Jul 2, 1935 [1] Jun 17, 1925 -
Côte d'Ivoire Aug 24, 1929 Aug 24, 1929 [2] - -
Cuba Jul 27, 1970 Jul 27, 1970 [2] - -
Cyprus Jun 24, 1966 Jun 24, 1966 [2] - -
Czech Republic Dec 12, 1966 Dec 12, 1966 [4] - -
Korea, Dem. People's Rep. Sep 17, 1993 Sep 17, 1993 [4] - -
Denmark Jan 4, 1989 Jan 4, 1989 [2] - -
Dominican Republic May 5, 1930 May 5, 1930 [1] Jun 17, 1925 -
Ecuador Dec 8, 1970 Dec 8, 1970 [2] - -
Egypt Sep 16, 1970 Sep 16, 1970 [2] - -
Equatorial Guinea Dec 6, 1928 Dec 6, 1928 [1] Jun 17, 1925 -
Estonia May 20, 1989 May 20, 1989 [2] - -
Ethiopia Aug 28, 1931 Aug 28, 1931 [1] Jun 17, 1925 -
Fiji Sep 20, 1935 Oct 7, 1935 [1] Jun 17, 1925 -
Finland Mar 21, 1973 Mar 21, 1973 [4] - -
France Jun 26, 1929 Jun 26, 1929 [1] Jun 17, 1925 -
Gambia May 9, 1926 May 10, 1926 [1] Jun 17, 1925 -
Germany Nov 16, 1966 Nov 5, 1966 [4] - -
Ghana Apr 25, 1929 Apr 25, 1929 [1] Jun 17, 1925 -
Greece May 3, 1967 May 3, 1967 [2] - -
Grenada May 30, 1931 May 30, 1931 [1] Jun 17, 1925 -
Guatemala May 20, 1989 May 20, 1989 [4] - -
Guinea-Bissau May 3, 1983 May 3, 1983 [2] - -
Holy See May 20, 1989 May 20, 1989 [2] - -
Hungary Oct 18, 1966 Oct 18, 1966 [2] - -
Iceland Oct 11, 1952 Oct 11, 1952 [2] - -
India Nov 2, 1967 Nov 2, 1967 [2] - -
Indonesia Apr 9, 1930 Apr 9, 1930 [1] Jun 17, 1925 -
Iran, Islamic Republic of Jan 21, 1971 Jan 21, 1971 [4] - -
Iraq Nov 5, 1929 Nov 5, 1929 [2] - -
Ireland Sep 8, 1931 Sep 8, 1931 [2] - -
Israel Aug 18, 1930 Aug 29, 1930 [2] - -
Italy Feb 20, 1969 Feb 20, 1969 [2] - -
Jamaica Apr 3, 1928 Apr 3, 1928 [1] Jun 17, 1925 -
Japan Jul 28, 1970 Jul 28, 1970 [4] - -
Jordan May 21, 1970 May 21, 1970 [1] Jun 17, 1925 -
Kenya Jan 30, 1977 Jan 20, 1977 [2] - -
Kuwait Jul 6, 1970 Jul 6, 1970 [2] - -
Lao, People's Dem. Rep. Dec 15, 1971 Dec 15, 1971 [2] - -
Latvia May 20, 1989 May 20, 1989 [2] - -
Lebanon Jun 3, 1931 Jun 3, 1931 [1] Jun 17, 1925 -
Lesotho Apr 17, 1969 Apr 17, 1969 [2] - -
Liberia Oct 4, 1966 Mar 10, 1972 [4] - -
Libya Jun 17, 1927 Jun 17, 1927 [2] - -
Liechtenstein Dec 29, 1971 Dec 29, 1971 [2] - -
Lithuania Sep 6, 1991 Apr 22, 1991 [2] - -
Luxembourg Jun 15, 1932 Jun 15, 1932 [1] Jun 17, 1925 -
Madagascar Sep 1, 1936 Sep 1, 1936 [1] Jun 17, 1925 -
Malawi Aug 2, 1967 Aug 2, 1967 [2] - -
Malaysia Sep 14, 1970 Sep 14, 1970 [2] - -
Maldives Dec 10, 1970 Dec 10, 1970 [2] - -
Malta Jan 6, 1967 Dec 27, 1966 [4] - -
Mauritius Sep 25, 1970 Sep 21, 1964 [4] - -
Mexico Nov 27, 1970 Mar 12, 1968 [4] - -
Monaco Mar 15, 1932 May 28, 1932 [2] - -
Mongolia Jan 6, 1967 Jan 6, 1967 [2] - -
Morocco Dec 6, 1968 Dec 6, 1968 [2] - -
Nepal Oct 13, 1970 Oct 13, 1970 [2] - -
Netherlands May 9, 1969 May 9, 1969 [2] - -
New Zealand Oct 31, 1930 Oct 31, 1930 [1] Jun 17, 1925 -
Nicaragua May 24, 1930 May 24, 1930 [2] - -
Niger Oct 4, 1990 Oct 4, 1990 [1] Jun 17, 1925 -
Nigeria Apr 19, 1967 Apr 5, 1967 [4] - -
Norway Oct 15, 1968 Oct 15, 1968 [2] - -
Pakistan Jul 27, 1932 Jul 27, 1932 [1] Jun 17, 1925 -
Panama Apr 13, 1960 Apr 13, 1960 [4] - -
Papua New Guinea Dec 4, 1970 Dec 4, 1970 [2] - -
Paraguay Sep 2, 1980 Sep 2, 1980 [2] - -
Peru Oct 22, 1933 Oct 22, 1933 [2] - -
Philippines Aug 13, 1985 Aug 13, 1985 [2] - -
Poland Jun 8, 1973 Jun 8, 1973 [2] - -
Portugal Feb 4, 1929 Feb 4, 1929 [1] Jun 17, 1925 -
Qatar Jul 1, 1930 Jun 1, 1930 [1] Jun 17, 1925 -
Korea, Republic of Oct 18, 1976 Oct 18, 1976 [2] - -
Romania Jan 4, 1989 Jan 4, 1989 [2] - -
Russian Federation Aug 23, 1929 Aug 23, 1929 [1] Jun 17, 1925 -
Rwanda Apr 15, 1928 Apr 5, 1928 [2] - -
Saint Kitts and Nevis Jun 25, 1964 May 11, 1964 [4] - -
Saint Lucia Nov 15, 1989 Nov 15, 1989 [2] - -
Saudi Arabia Feb 22, 1979 Feb 22, 1979 [2] - -
Senegal Jan 27, 1971 Jan 27, 1971 [2] - -
Sierra Leone Jun 15, 1977 Jun 15, 1977 [2] - -
Slovakia Mar 20, 1967 Mar 20, 1967 [2] - -
Solomon Islands Jan 1, 1993 Jan 1, 1993 [4] - -
South Africa Jul 7, 1978 Jul 7, 1978 [2] - -
Spain May 24, 1930 May 24, 1930 [2] - -
Sri Lanka Aug 22, 1929 Aug 22, 1929 [1] Jun 17, 1925 -
Sudan Feb 3, 1954 Jan 20, 1954 [2] - -
Sweden Dec 17, 1980 Dec 17, 1980 [2] - -
Switzerland Jul 23, 1991 Jul 23, 1991 [2] - -
Syrian Arab Republic Apr 25, 1930 Apr 25, 1930 [1] Jun 17, 1925 -
Thailand Jul 12, 1932 Jul 12, 1932 [1] Jun 17, 1925 -
Togo Dec 17, 1968 Dec 17, 1968 [2] - -
Tonga Jun 6, 1931 Jun 6, 1931 [1] Jun 17, 1925 -
Trinidad and Tobago Apr 5, 1971 Apr 5, 1971 [2] - -
Tunisia Jul 19, 1971 Jul 19, 1971 [4] - -
Turkey Oct 9, 1970 Aug 31, 1962 [4] - -
Uganda Jul 12, 1967 Jul 12, 1967 [2] - -
United Kingdom Oct 5, 1929 Oct 5, 1929 [1] Jun 17, 1925 -
Tanzania, Un. Rep. of May 24, 1965 May 24, 1965 [2] - -
United States of America Apr 9, 1930 Apr 9, 1930 [1] Jun 17, 1925 -
Uruguay Apr 22, 1963 Apr 22, 1963 [2] - -
Venezuela, Boliv. Rep. of Apr 10, 1975 Apr 10, 1975 [1] Jun 17, 1925 -
Viet Nam Apr 12, 1977 Mar 1, 1977 [1] Jun 17, 1925 -
Yemen Feb 8, 1928 Feb 8, 1928 [1] Jun 17, 1925 -
Serbia Oct 26, 1980 Dec 15, 1980 [2] - -
Croatia Mar 17, 1971 Mar 17, 1971 [2] - -
Slovenia Apr 12, 1929 Apr 12, 1929 [1] Jun 17, 1925 -
Saint Vincent and the Grenadines Dec 18, 2006 Dec 18, 2006 [1] - -
Costa Rica Apr 8, 2008 Apr 8, 2008 [1] - -
El Salvador May 8, 1999 Apr 23, 1999 [1] - -
Moldova, Republic of Jun 17, 2009 Jun 17, 2009 [1] - -
Suriname Jan 12, 2010 Jan 12, 2010 [1] - -
Ukraine Jan 31, 2011 Jan 31, 2011 [2] - -
Colombia Oct 31, 1930 Oct 31, 1930 [1] - Nov 25, 1975
Cabo Verde Aug 7, 2003 Aug 7, 2003 [4] - -
Eswatini, Kingdom of Nov 24, 2015 Nov 24, 2015 [1] - -
North Macedonia Aug 20, 2015 Aug 20, 2015 [1] - -

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