The 1969 and the 1896 Vienna Conventions on the Law of Treaties are essential components of the contempory international legal order.
They aim at regulating what has become the main source of public international law and a crucial tool in inter-state relations. The Vienna Conventions codify to a significant extent the customary rules that pre-existed in the field, but also put forward innovative concepts, such as jus cogens.
In spite of their importance, these two instruments had so far not been the object of a detailed commentary. These volumes fill the gap, by providing both international and natinional lawyers with an in-depth analysis of each provision of both conventions.
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