The interpretation of EU law in accordance with international law

Is international law Union law and vice versa? How are the individual components of international law to be classified in the tiered structure of the EU legal order? Is there even an obligation to interpret EU law in accordance with international law? If so, to what extent and what are the (validity) reasons for this? How has the case law of the ECJ developed in this area? Which questions of interpretation remain controversial?If you are looking for answers to these questions, this short book is for you.