- Good faith — Treaties, successive — Vienna Convention on the Law of Treaties — European Court of Justice (ECJ)
This chapter presents a critical analysis of the case law of the European Court of Justice and of the General Court relating to the application of the international law of treaties. It covers the some forty cases in which the Courts have referred explicitly to the Vienna Convention on the Law of Treaties 1969, and a few more where this happened implicitly, during the period 1998–2010. Inevitably the emphasis falls on the application of the rules of treaty interpretation to the international agreements concluded by the European Union (EU), but also to the founding treaties of the EU itself. The Courts have been confronted with great regularity with questions relating to the law of treaties and thus have become increasingly sophisticated in their use of it. The recent accusation that the Court is adverse to international law seems to be based on a few dramatic cases, not on the steady stream of smaller cases in which the law of treaties plays a role.