Sources of the Law of Immunity of International Organizations
Because international law is central to the determination of the jurisdictional immunity of international organizations, this chapter examines the sources of the immunity of international organizations, which is mainly treaty law. The basic text or constituent instrument by which member States establish international organizations usually provides for the organizations’ privileges and immunities. Provisions on privileges and immunities are also found in national legislation, and bilateral agreements, such as headquarters agreements or establishment agreements. The chapter also examines whether the immunity of international organizations is governed by customary international law in addition to treaty law. It further examines the interrelationship between treaty and customary international law, and the relationship between international law and national law with respect to jurisdictional immunity.