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Cover International Law

5. Soft Law in International Law-Making  

Alan Boyle

From a law-making perspective the term ’soft lawʼ is in most cases simply a convenient description for a variety of non-legally binding instruments used in contemporary international relations by States and international organizations. Soft law in this sense can be contrasted with hard law, which is always binding. Non-binding soft law instruments are not law per se, but may be evidence of existing law, or formative of the opinio juris or State practice that generates new customary law. They may additionally acquire binding legal character as elements of a treaty-based regulatory regime, or constitute a subsequent agreement between the parties regarding interpretation of a treaty or application of its provisions. Other non-binding soft-law instruments are significant mainly because they are the first step in a process eventually leading to conclusion of a multilateral treaty, or because they provide the detailed rules and technical standards required for the implementation of a treaty. An alternative view of soft law focuses on the contrast between ’rulesʼ, involving clear and reasonably specific commitments which are in this sense hard law, and ’normsʼ or ’principlesʼ, which, being more open-textured or general in their content and wording, can thus be seen as soft even when contained in a binding treaty. It is a fallacy to dismiss soft law because it does not readily fit a theory of what is ‘law’: properly understood, it can and does contribute to the corpus of international law-making.

Chapter

Cover International Law

5. Soft Law in International Law-Making  

Alan Boyle

From a law-making perspective the term ‘soft law’ is in most cases simply a convenient description for a variety of non-legally binding instruments used in contemporary international relations by States and international organizations. Soft law in this sense can be contrasted with hard law, which is always binding. Non-binding soft law instruments are not law per se, but may be evidence of existing law, or formative of the opinio juris or State practice that generates new customary law. They may additionally acquire binding legal character as elements of a treaty-based regulatory regime, or constitute a subsequent agreement between the parties regarding interpretation of a treaty or application of its provisions. Other non-binding soft-law instruments are significant mainly because they are the first step in a process eventually leading to conclusion of a multilateral treaty, or because they provide the detailed rules and technical standards required for the implementation of a treaty. An alternative view of soft law focuses on the contrast between ‘rules’, involving clear and reasonably specific commitments which are in this sense hard law, and ‘norms’ or ‘principles’, which, being more open-textured or general in their content and wording, can thus be seen as soft even when contained in a binding treaty. It is a fallacy to dismiss soft law because it does not readily fit a theory of what is ‘law’: properly understood, it can and does contribute to the corpus of international law-making.

Chapter

Cover International Law Concentrate

4. The relationship between international and domestic law  

This chapter analyses the relationship between international and domestic law and particularly the reception of the former in domestic legal systems. This matter is regulated in the receiving State’s constitutional law and is generally based on the doctrine of incorporation and that of transformation. The former does not require any further implementing legislation by the receiving State, but where it is applied it is subject to several limitations, particularly where the treaty in question is not sufficiently clear or precise, in which case it is not automatically self-executing. The philosophical foundations of the relationship between international and domestic law are explained by reference to the monist and dualist theories. Besides treaties, domestic law also regulates the reception of custom and UN Security Council resolutions. However, in respect of Security Council resolutions, international human rights law determines their legality.

Chapter

Cover International Law

2. Sources of international law  

This chapter provides an overview of the legal sources in international law. Sources of law determine the rules of legal society and, like national legal societies, the international legal society has its own set of rules. The discussion begins in Section 2.2 with article 38 of the International Court of Justice Statute. Section 2.3 discusses treaties, Section 2.4 covers customary international law, and Section 2.5 turns to general principles of international law. Attention then turns to the two additional sources listed in article 38. Section 2.6 discusses judicial decisions and Section 2.7 examines academic contributions. Section 2.8 discusses the role played by unilateral statements. The chapter then turns to the issue of a hierarchy of sources in Section 2.9 and concludes in Section 2.10 with a discussion of non-binding instruments and so-called ‘soft law’.

Chapter

Cover International Law

3. Hierarchy of norms in international law  

This chapter examines the hierarchy of norms and sources in international law. Establishing a hierarchy of norms and sources allows for a community to elevate certain fundamental principles over ordinary norms, and to establish order and clarity in the relations between norms, authoritative institutions, and legal subjects. In the last half-century, a special class of general rules endowed with peremptory legal force has emerged. Known interchangeably as ‘peremptory norms’ or ‘norms of jus cogens’, these are regarded as possessing a higher status than ordinary rules of international law, and would prevail over the latter in cases of conflict. As such, whether an ordinary rule exists in treaty or customary law, or is a general principle, it is null and void if in conflict with a rule of jus cogens. The chapter also studies a related category known as rights or, more commonly, obligations erga omnes (‘owed to all’).