The Parties to the present Convention,

Considering the fundamental role of treaties m the history of intemational

relations,

Recognizing the consensual nature of treaties and their ever-increasing importance

as a source of intemational law,

Noting that the principies of free consent and of good faith and the pacta sunt

servanda rule are universally recognized,

Affirming the importance of enhancing the process of codification and progressive

development of intemational law at a universal levei,

Believing that the codification and progressive development of the rules relating

to treaties between States and international organizations or between intemational

organizations are means of enhancing legal order in international relations and of serving

the purposes ofthe United Nations,

Having in mind the principies of international law embodied in the Charter of the

United Nations, such as the principies 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,

Bearing in mind the provisions of the Vienna Convention on the Law of Treaties

of 1969,

Recognizing the relationship between the law of treaties between States and the

law of treaties between States and international organizations or between international

organizations,

Considering the importance of treaties between States and international

organizations or between intemational organizations as a useful means of developing

intemational relations and ensuring conditions for peaceful cooperation among nations,

whatever their constitutional and social systems,

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