Introduction
This essay examines John Austin’s categorisation of international law as “laws improperly so called” within the context of his positivist legal theory. As a foundational figure in legal positivism, Austin’s perspective significantly shaped discussions on the nature of law, particularly in distinguishing between proper laws backed by sovereign authority and other normative systems. This analysis, relevant to the study of public international law, will explore Austin’s definition of law, his rationale for excluding international law from this category, and the implications of his views. By engaging with his arguments, the essay aims to provide a sound understanding of the limitations of his framework while considering alternative perspectives on the status of international law.
Austin’s Definition of Law
John Austin, writing in the 19th century, defined law as a set of rules or commands issued by a sovereign authority to its subjects, enforceable through sanctions (Austin, 1832). Central to his positivist approach was the separation of law from morality; law’s validity depended solely on its source, not its content. For Austin, a sovereign must possess supreme and independent power, and laws must be general commands habitually obeyed by the populace. This strict criterion formed the basis of his legal theory, providing a clear, albeit narrow, framework for identifying “proper” laws. Consequently, any normative system lacking these characteristics—such as customs or moral codes—was deemed “improperly so called” (Austin, 1832). This rigid definition, while logical, arguably limited the scope of what could be considered law, especially in complex, non-domestic contexts.
International Law as “Laws Improperly So Called”
Austin placed international law within the category of “laws improperly so called” because it lacked the essential elements of his legal definition. Primarily, he argued that international law does not emanate from a singular sovereign authority. Unlike domestic law, which is enforced by a state’s government, international law governs relations between independent states, each claiming sovereignty (Austin, 1832). Therefore, there exists no superior power to issue commands or enforce sanctions consistently across nations. Austin viewed international law more akin to moral principles or customs—agreements based on mutual consent rather than binding rules. For instance, treaties, a key source of international law, were seen by Austin as contracts between equals, not laws enforceable by a higher authority. Furthermore, the absence of a universal sanctioning mechanism reinforced his stance; violations of international norms often go unpunished due to the lack of a global enforcer. While Austin’s logic is coherent within his framework, it arguably overlooks the evolving nature of international cooperation and enforcement mechanisms, such as those later developed through bodies like the United Nations.
Critical Evaluation of Austin’s Perspective
Austin’s dismissal of international law as “improper” has faced criticism for its narrowness. Critics argue that his theory fails to account for the practical authority international law holds in regulating state behaviour (Hart, 1961). For example, customary international law, derived from consistent state practice and opinio juris, often binds states even without a sovereign command. Additionally, modern international courts, such as the International Court of Justice, provide mechanisms for dispute resolution, challenging Austin’s view on enforcement. Hart (1961) further contends that law need not always stem from a sovereign; rules can gain validity through acceptance and social practice, a perspective more applicable to international law. However, Austin’s framework retains relevance in highlighting the structural differences between domestic and international legal systems, particularly the latter’s reliance on voluntary compliance. This tension reflects the limitations of applying a domestic-centric lens to a fundamentally different field, underscoring the need for a broader definition of law in the global context.
Conclusion
In conclusion, John Austin categorised international law as “laws improperly so called” due to its lack of a sovereign authority and enforceable sanctions, core components of his positivist definition of law. While his argument is logically consistent within his framework, it reveals the constraints of applying a rigid, state-centric model to the complexities of international relations. Critiques from scholars like Hart illustrate that international law, despite lacking a singular enforcer, holds significant normative force through state consent and evolving institutions. The implications of Austin’s perspective remain pertinent for students of public international law, as they highlight enduring debates about the nature and legitimacy of legal systems beyond national boundaries. Ultimately, understanding Austin’s view encourages a deeper exploration of how law adapts to global challenges, balancing theoretical precision with practical realities.
References
- Austin, J. (1832) The Province of Jurisprudence Determined. London: John Murray.
- Hart, H.L.A. (1961) The Concept of Law. Oxford: Clarendon Press.

