This second edition of Professor Amerasinghe's successful 1996 book has been significantly revised to include a new chapter on judicial organs of international organizations, as well as a considerably developed chapter on dispute settlement in the context of international organizations. Covering all the important institutional aspects of international organizations, it discusses a range of topics including membership and representation, international and national personality, the doctrine of ultra vives, liability of members to third parties, dissolution and succession. Of interest to scholars and practitioners in international law and international relations.