Vienna Convention on the Law of Treaties 1969维也纳条约法公约The States Parties to the present Convention,本公约各当事国，Considering the fundamental role of treaties in the history of international relations,鉴于条约在国际关系历史上之基本地位，Recognizing the ever-increasing importance of treaties as a source of international law and as a means of developing peaceful cooperation among nations, whatever their constitutional and social systems,承认条约为国际法渊源之一，且为各国间不分宪法及社会制度发展和平合作之工具，其重要性日益增加，Noting that the principle
