Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or Other Gases, and of Bacteriological Methods of Warfare

Signed at Geneva: 17 June 1925 
 
Entered into force: for each signatory as from the date of deposit of its ratification; accessions take effect 
on the date of the notification by the depositary Government
 
Depositary: Government of France
 
State Signature Deposit Deposit Type
Afghanistan 9 December 1986  
Accession
Albania 20 December 1989  
Accession
Algeria 27 January 1992 *
Accession
Angola 8 November 1990 *
Accession
Antigua and Barbuda 27 April 1988  
Succession
Argentina 12 May 1969  
Accession
Australia 22 January 1930 *
Accession
Austria 17 June 1925  
9 May 1928  
Ratification
Bahrain 9 December 1988 *
Accession
Bangladesh 20 May 1989 *
Accession
Barbados 16 July 1976 *
Succession
Belgium 17 June 1925  
4 December 1928 *
Ratification
Benin 9 December 1986  
Accession
Bhutan 19 February 1979  
Accession
Bolivia (Plurinational State of) 19 February 1979  
Accession
Brazil 17 June 1925  
28 August 1970  
Ratification
Bulgaria 17 June 1925  
7 March 1934 *
Ratification
Burkina Faso 3 March 1971  
Accession
Cambodia 15 March 1983 *
Accession
Cameroon 20 July 1989  
Accession
Canada 17 June 1925  
6 May 1930 *
Ratification
Cape Verde 16 May 1991  
Accession
Central African Republic 30 July 1970  
Accession
Chile 17 June 1925  
2 July 1935 *
Ratification
China 13 July 1952 *
Succession
Costa Rica 22 July 2009  
Accession
Côte d'Ivoire 27 July 1970  
Accession
Croatia 16 August 2006  
Accession
Cuba 24 June 1966  
Accession
Cyprus 21 November 1966  
Succession
Czech Republic 17 September 1993 *
Succession
Democratic People's Republic of Korea 8 December 1988 *
Accession
Denmark 17 June 1925  
5 May 1930  
Ratification
Dominican Republic 8 December 1970  
Accession
Ecuador 16 September 1970  
Accession
Egypt 17 June 1925  
6 December 1928  
Ratification
El Salvador 17 June 1925  
26 February 2008  
Ratification
Equatorial Guinea 20 May 1989  
Accession
Estonia 17 June 1925  
28 August 1931 *
Ratification
Ethiopia 17 June 1925  
7 October 1935  
Ratification
Fiji 21 March 1973 *
Succession
Finland 17 June 1925  
26 June 1929  
Ratification
France 17 June 1925  
10 May 1926 *
Ratification
Gambia 11 November 1966  
Succession
Germany 17 June 1925  
25 April 1929  
Ratification
Ghana 3 May 1967  
Accession
Greece 17 June 1925  
30 May 1931  
Ratification
Grenada 20 May 1989  
Succession
Guatemala 3 May 1983  
Accession
Guinea-Bissau 20 May 1989  
Accession
Holy See 18 October 1966  
Accession
Hungary 27 August 1952  
Accession
Iceland 2 November 1967  
Accession
India 17 June 1925  
9 April 1930 *
Ratification
Indonesia 13 January 1971  
Succession
Iran (Islamic Republic of) 3 August 1929  
Accession
Iraq 7 April 1931 *
Accession
Ireland 18 August 1930 *
Accession
Israel 20 February 1969 *
Accession
Italy 17 June 1925  
3 April 1928  
Ratification
Jamaica 28 July 1970  
Succession
Japan 17 June 1925  
21 May 1970  
Ratification
Jordan 20 March 1977 *
Accession
Kenya 6 July 1970  
Accession
Kuwait 15 December 1971 *
Accession
Lao People's Democratic Republic 20 May 1989  
Accession
Latvia 17 June 1925  
3 June 1931  
Ratification
Lebanon 17 April 1969  
Accession
Lesotho 15 March 1973  
Succession
Liberia 2 April 1927  
Accession
Libya 29 December 1971 *
Accession
Liechtenstein 6 September 1991  
Accession
Lithuania 17 June 1925  
15 June 1933  
Ratification
Luxembourg 17 June 1925  
1 September 1936  
Ratification
Madagascar 21 June 1967  
Accession
Malawi 14 September 1970  
Accession
Malaysia 10 December 1970  
Accession
Maldives 19 December 1966  
Accession
Malta 9 October 1970  
Succession
Mauritius 23 December 1970  
Succession
Mexico 15 March 1932  
Accession
Monaco 6 January 1967  
Accession
Mongolia 6 December 1968 *
Accession
Morocco 13 October 1970  
Accession
Nepal 9 May 1969  
Accession
Netherlands 17 June 1925  
31 October 1930 *
Ratification
New Zealand 22 January 1930 *
Accession
Nicaragua 17 June 1925  
5 October 1990 *
Ratification
Niger 18 March 1967  
Succession
Nigeria 15 October 1968 *
Accession
Norway 17 June 1925  
27 July 1932  
Ratification
Pakistan 3 June 1960 *
Succession
Panama 4 December 1970 *
Accession
Papua New Guinea 11 December 1980 *
Succession
Paraguay 22 October 1933 *
Accession
Peru 21 May 1985  
Accession
Philippines 8 June 1973  
Accession
Poland 17 June 1925  
4 February 1929  
Ratification
Portugal 17 June 1925  
1 July 1930 *
Ratification
Qatar 18 October 1976  
Accession
Republic of Korea 4 January 1989 *
Accession
Republic of Moldova 4 November 2010  
Accession
Romania 17 June 1925  
23 August 1929 *
Ratification
Russian Federation 5 April 1928 *
Ratification
Rwanda 21 March 1964  
Succession
Saint Kitts and Nevis 26 October 1989  
Succession
Saint Lucia 14 December 1988  
Succession
Saint Vincent and the Grenadines 8 May 1999  
Succession
Saudi Arabia 27 January 1971  
Accession
Senegal 20 July 1977  
Accession
Serbia 3 June 2006  
Succession
Sierra Leone 20 March 1967  
Accession
Slovakia 28 October 1997 *
Succession
Slovenia 8 April 2008  
Accession
Solomon Islands 1 June 1981 *
Succession
South Africa 24 May 1930 *
Accession
Spain 17 June 1925  
22 August 1929 *
Ratification
Sri Lanka 18 December 1953  
Accession
Sudan 17 December 1980  
Accession
Swaziland 23 July 1991  
Accession
Sweden 17 June 1925  
25 April 1930  
Ratification
Switzerland 17 June 1925  
12 July 1932  
Ratification
Syrian Arab Republic 17 December 1968 *
Accession
Thailand 17 June 1925  
6 June 1931  
Ratification
Togo 5 April 1971  
Accession
Tonga 19 July 1971  
Succession
Trinidad and Tobago 24 November 1970  
Succession
Tunisia 12 July 1967  
Accession
Turkey 17 June 1925  
5 October 1929  
Ratification
Uganda 2 April 1965  
Accession
Ukraine 15 July 2003  
Succession
United Kingdom of Great Britain and Northern Ireland 17 June 1925  
9 April 1930 *
Ratification
United Republic of Tanzania 28 February 1963  
Accession
United States of America 17 June 1925  
10 April 1975 *
Ratification
Uruguay 17 June 1925  
12 April 1977  
Ratification
Venezuela (Bolivarian Republic of) 17 June 1925  
8 February 1928  
Ratification
Viet Nam 15 December 1980 *
Accession
Yemen 9 December 1986 *
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: 36
Number of States Parties: 138