Understanding International Law: Origins, Scope, and Relevance

Posted on May 16, 2024 in Social sciences

The Origins, Scope, and Nature of International Law

Historical Development of International Law

This section covers the history and development of international law, from its ancient origins to its modern form. It explores the traditional definition of international law as the law governing relations between states and the shift towards a more expansive understanding that includes non-state actors and a wider range of issues.

  • The traditional definition of international law as the “law of nations” (droit de gens, ius gentium), a state-centered concept where states were the only subjects of international law (Bentham, 1970) (Orakhelashvili, 2018; Shaw, 2014).
  • The birth of modern international law in the 16th/17th century, with the work of scholars like Francisco de Vitoria, Alberico Gentili, and Hugo Grotius, and the impact of colonialism (Orakhelashvili, 2018; Shaw, 2014).
  • The Peace of Westphalia in 1648 and the establishment of the modern system of sovereign and equal states (Orakhelashvili, 2018; Shaw, 2014).
  • The Congress of Vienna and the rise of nationalism, the use of international law to justify colonialism, and the Hague Conferences on the conduct of warfare (1815-1914) (Orakhelashvili, 2018; Shaw, 2014).
  • The League of Nations and its contributions, such as the International Labor Organization and the Permanent Court of International Justice, as well as its failure to prevent World War II (Orakhelashvili, 2018; Shaw, 2014).
  • The establishment of the United Nations in 1945, the development of international humanitarian law (IHL) and international human rights law (IHRL), and the impact on the concept of state sovereignty (Orakhelashvili, 2018; Shaw, 2014).
  • The expansion of international law in terms of issues (e.g., trade, environment, human rights) and subjects (e.g., individuals, groups, international organizations) (Cali, 2010).

Defining International Law

Theoretical Approaches

This section explores different theoretical approaches to defining and understanding the nature of international law, including positivist, natural law, and outcome-oriented perspectives.

Positivist Approaches

  • John Austin’s view of international law as “not really law, but positive morality” (Cali, 2010).
  • Voluntarist or will theories (classic legal positivism), parallels with realism (Cali, 2010).
  • Consent theories, parallels with institutionalism (Cali, 2010).

Natural Law Approaches

  • International law as embedded in moral rules, parallels with social constructivist theories (Cali, 2010).
  • The three principles of natural law: directing human choice and action towards intelligible purposes, specifying the most basic principles of morality, and prescribing specific possible choices (Cali, 2010).

Outcome-Oriented Theories

  • International law as a means to maximize values like human rights, human welfare, dignity, and social justice (Cali, 2010).
  • Third World Approaches to International Law (TWAIL) and feminist approaches (Cali, 2010).
  • Approaches to moral foreign policy (Cali, 2010).

Framework Theories

  • International law as facilitating relationships and interactions between entities (states), with values like human rights as by-products or necessary elements for cooperation (Cali, 2010).

The Scope and Nature of International Law

International Law vs. Domestic Law

This section compares the characteristics of international law and domestic law and explores the effectiveness and relevance of international law in international relations.

Characteristics of International Law vs. Domestic Law

  • Law-making: No legislative body vs. legislative body (Orakhelashvili, 2018; Shaw, 2014).
  • Law determination: No compulsory jurisdiction vs. judiciary body (Orakhelashvili, 2018; Shaw, 2014).
  • Law enforcement: No enforcement body vs. executive body (Orakhelashvili, 2018; Shaw, 2014).
  • Subjects: Primarily sovereign states vs. governmental bodies and private individuals/groups (Orakhelashvili, 2018; Shaw, 2014).
  • Legal system: Horizontal and decentralized vs. hierarchical and centralized (Orakhelashvili, 2018; Shaw, 2014).
  • Consent: Matters (a form of state sovereignty) vs. not necessary (Orakhelashvili, 2018; Shaw, 2014).

The Effectiveness of International Law

  • Three components of a legal system: postulates, structure, and culture (Cali, 2010).
  • Factors affecting effectiveness: commitment, reputational consequences, “compliance pull” of norms, and self-interest based on reciprocity (Cali, 2010).
  • The “shadow of the future” and the view that “almost all nations observe almost all principles of international law… almost all of the time” (Henkin) (Cali, 2010).

The Relevance of International Law in International Relations

  • Varying perspectives: international law as irrelevant or omnipotent, and the middle ground that it is neither irrelevant nor omnipotent (Cali, 2010).
  • Reasons for the increased role of international law: interdependence, global challenges, and the need to protect human rights (Cali, 2010).
  • Challenges: accommodation of non-state entities, inadequate law-making process, weak enforcement mechanism, and judicial fragmentation (Cali, 2010).

The Relationship between International Law and International Relations

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– Debate on whether they are separate disciplines or closely intertwined (Cali, 2010)