Vol. 1155,1-18232
332 United Nations — Treaty Series • Nations Unies — Recueil des Traités 1980
VIENNA CONVENTION1 ON THE LAW OF TREATIES
The States Parties to the present Convention,
Considering the fundamental role of treaties in the history of international relations,
Recognizing the ever-increasing importance of treaties as a source of international law and as a means of developing peaceful co-operation among nations, whatever their constitutional and social systems,
Noting that the principles of free consent and of good faith and the pacta sunt servanda rule are universally recognized,
Affirming that disputes concerning treaties, like other international disputes, should be settled by peaceful means and in conformity with the principles of justice and international law,
Recalling the determination of the peoples of the United Nations to establish conditions under which justice and respect for the obligations arising from treaties can be maintained,
Having in mind the principles of international law embodied in the Charter of the United Nations, such as the principles of the equal rights and self- determination of peoples, of the sovereign equality and independence of all States, of non interference in the domestic affairs of States, of the prohibition of the threat or use of force and of universal respect for, and observance of, human rights and fundamental freedoms for all,
Came into force on 27 January 1980, i.e., on the thirtieth day following the date of deposit of the thirty-fifth instrument of ratification or accession with the Secretary General of the United Nations, in accordance with article 84 (1):
State Date of deposit of the instrument of ratification or accession (a)
Argentina …….\,………. 5 December 1972
Australia … K”………….. 13 June 1974o
Austria …..v………….. 30 April 1979 a
Barbados , .K’……………. 24 June 1971
Canada* …… v:………… 14 October 1970a
Central African Republic , !/.. 10 December 1971 a
Cyprus .. .i/…………….. 28 December 1970a
Denmark* ……..ff……… 1 June 1971 a
Finland …… v:………… 19 August 1976o
Greece …. \/. …………… 30 October 1976
Holy See .. .y……………. 25 February 1977
Honduras …. V .V………… 20 September 1977
Italy ……./ ………… 25 July 1974’a
Jamaica …. ^r………….. 28 July 1970
Kuwait* ……V…………. 11 November 1975 a
Lesotho …… K”………… 3 March 19720
Mauritius ……. X’……….. 18 January 1973
Mexico .. …v’………….. 25 September 1974
Morocco …X…………. 26 September 1972
Nauru .. t,……………… 5 May 1978 a
New Zealand … ,Y……….. 4 August 1971
Niger ………. y……….. 27 October 1971 a
Nigeria . . ,v<……………. 31 July 1969
Paraguay …… i.-:………. 3 February 1972 a
Philippines …… A^/:. ……. 15 November 1972
Republic of Korea … .fc-……. 27 April 1977
Spain …….v………….. 16 May 1972 a
Sweden . .v……………… 4 February 1975
Syrian Arab Republic* ..is..,,. 2 October 1970 o
Togo ….. …K. …………. 28 December 1979 o
Tunisia* .. 1^……………. 23 June 19710
United Kingdom of Great Britain and Northern Ireland* .,. U . 25 June 1971
United Republic of Tanzania* v, 12 April 1976 o
Yugoslavia ._. i_<<…………. 27 August 1970
Zaire .vf……………… 25 July 1977 a
Vienna Convention on the Law of Treaties
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| Signed | 23 May 1969 | |
|---|---|---|
| Location | Vienna | |
| Effective | 27 January 1980 | |
| Condition | Ratification by 35 states[1] | |
| Signatories | 45 | |
| Parties | 114 (as of April 2014)[2] | |
| Depositary | UN Secretary-General | |
| Languages | Chinese, English, French, Russian and Spanish[1] | |
 Vienna Convention on the Law of Treaties at Wikisource |
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The Vienna Convention on the Law of Treaties (VCLT) is a treaty concerning the international law on treaties between states. It was adopted on 22 May 1969[3] and opened for signature on 23 May 1969.[1] The Convention entered into force on 27 January 1980.[1] The VCLT has been ratified by 114 states as of April 2014.[2] Some countries that have not ratified the Convention recognize it as a restatement of customary law and binding upon them as such.[citation needed]