International Opium Convention

Signed at Geneva on 19 February 1925 and amended by the Protocol signed at Lake Success, New York, on 11 December 1946

ENTRY INTO FORCE: 3 February 1948, the date on which the amendments to the Convention, as set forth in the annex to the Protocol of 11 December 1946, entered into force, in accordance with paragraph 2 of article VII of the Protocol.

Participant1

Definitive signature or acceptance of the Protocol of 11 December 1946, or succession to the Convention and the said Protocol

Accession (a), succession (d) to the Convention as amended

Afghanistan 29 Jan 1957 a

Algeria 31 Oct 1963 a

Argentina 11 Dec 1946

Australia 28 Aug 1947

Austria 17 May 1950

Bahamas 13 Aug 1975

Belgium 11 Dec 1946

Benin 5 Dec 1961 d

Bolivia 14 Dec 1946

Brazil 17 Dec 1946

Burkina Faso 26 Apr 1963 a

Cambodia1 3 Oct 1951 d

Cameroon 20 Nov 1961 d

Canada 11 Dec 1946

Central African Republic 4 Sep 1962 d

Chile 11 Dec 1946

Colombia 11 Dec 1946

Congo 15 Oct 1962 d

Côte d'Ivoire 8 Dec 1961 d

Czech Republic2 30 Dec 1993 d

Democratic Republic of the Congo 31 May 1962 d

Denmark 15 Jun 1949

Dominican Republic 11 Dec 1946

Ecuador 8 Jun 1951

Egypt 13 Sep 1948

Ethiopia 9 Sep 1947 a

Fiji 1 Nov 1971

Finland 3 Feb 1948

France 10 Oct 1947

Germany 3 12 Aug 1959

Ghana 7 Apr 1958 d

Greece 21 Feb 1949

Haiti 31 May 1951

Honduras 11 Dec 1946

Hungary 16 Dec 1955

India 11 Dec 1946

Indonesia 3 Apr 1958 a

Iraq 14 Sep 1950

Ireland 18 Feb 1948

Israel 16 May 1952 a

Italy 25 Mar 1948

Jamaica 26 Dec 1963 d

Japan 27 Mar 1952

Jordan 7 May 1958 a

Lao People's Democratic Republic 1 7 Oct 1950 d

Lebanon 13 Dec 1946

Lesotho 4 Nov 1974 d

Liechtenstein4 25 Sep 1947

Luxembourg 13 Oct 1949

Malawi 22 Jul 1965 d

Malaysia 21 Aug 1958 d

Mauritius 18 Jul 1969 d

Monaco 21 Nov 1947

Morocco 7 Nov 1956 d

Netherlands 10 Mar 1948

New Zealand 11 Dec 1946

Niger 25 Aug 1961 d

Nigeria 26 Jun 1961 d

Norway 2 Jul 1947

Papua New Guinea 28 Oct 1980 d

Poland 11 Dec 1946

Romania 11 Oct 1961

Russian Federation 25 Oct 1947

Rwanda 5 Aug 1964 d

Senegal 2 May 1963 d

Sierra Leone 13 Mar 1962 d

Slovakia 2 28 May 1993 d

South Africa 24 Feb 1948

Spain 26 Sep 1955

Sri Lanka 4 Dec 1957 d

Sweden 17 Oct 1947

Switzerland 4 25 Sep 1947

Syrian Arab Republic 11 Dec 1946

Thailand 27 Oct 1947

Togo 27 Feb 1962 d

Trinidad and Tobago 11 Apr 1966 d

Turkey 11 Dec 1946

Uganda 20 Oct 1965 a

United Kingdom 11 Dec 1946

Yugoslavia 19 May 1948

Zambia 9 Apr 1973 d

Notes:

1 The Republic of Viet-Nam had succeeded to the Convention on 11 August 1950. In this regard and in regard to the successions by Cambodia and the Lao People's Democratic Republic, see note in chapter VI.2.

2 Czechoslovakia, by virtue of its definitive signature on 11 December 1946 of the Protocol of 11 December 1946 amending the Convention of 1925, became a party to the Convention on the date of that signature. See also note in note I.2.

3 See note in chapter I.2.

4 With a declaration of application to the Principality of Liechtenstein.