The relevance of judicial decisions in international adjudications: Reflections on Articles 38(1)(d) and 59 of the statute and the practice of the International Court of Justice

Abstract

In classical international law, States alone were the makers and subjects of the law. Times have changed. Contemporary international law admits, not only States as its subjects but also individuals and international organisations; it controls not just the needs of States but also the needs of individuals as it continues to venture into areas which, in the classical era, were exclusively reserved to domestic law. The fact that international law now applies to entities other than States is no longer a subject of controversy both in theory and practice. On the contrary, the question relating to whether international law could originate from a source other than through the consent of States in the positivist sense of the law has remained a question of controversy. The question has been made more complex by the multiplicity of international institutions created by States and vested with authority to perform the functions entrusted to them under international law. The functions they perform influence the behaviours and expectations of both States and individuals; but the powers they exercise belong to the States which delegated the powers. Since the powers are delegated by States, it should follow that the powers be confined by the very fact of delegation to the functions for which the powers had been granted. Such powers cannot be used for any other purpose, perhaps. With this in mind, the question sought to be answered in this work is whether the powers granted to International Court of Justice to “decide disputes” – article 38(1) of the Statute of the Court) – implicates the power of judicial lawmaking. In other words, whether rules and principles arising from the decisions of the Court can be properly referred to as rules and principles of international law. The question becomes quite intriguing when placed within the context of article 38(1)(d) and article 59 of the Statute of the Court on the one hand, and the practice of the Court and of the States appearing before it on the other hand. Articles 38(1)(d) provides: “subject to the provisions of Article 59, judicial decisions and the teachings of the most highly qualified publicists of the various nations, as subsidiary means for the determination of rules of law.” By article 59: “The decision of the Court has no binding force except between the parties and in respect of that particular case”. Notwithstanding the language of the above provisions, it is shown in this work that like judges in municipal law, judges in the ICJ lay down rules and principles having legal implications for the decisions in subsequent cases as well as for the conduct of States, in general, regarding areas within the degrees of the settled case-law of the Court. It is accordingly argued that to the extent that rules and principles in the decisions of the Court are relevant as rules and principles of international law (in subsequent decisions of the Court) to the determination of international law rights and obligations of States, judicial decisions in article 38(1)(d) are a source of international law. This is notwithstanding the unhelpful language of paragraph (d) and the influence of article 59. Concerning article 59, the writer argues that the article has no bearing on the authority of judicial decisions in article 38(1)(d); its real function being to protect the legal rights and interests of States from a decision given in a case to which they were not parties.