Philip C. Jessup International Law Moot Court Competition

LogoThe Philip C. Jessup International Law Moot Court Competition, which has been held every year since 1960, is an advocacy competition for law students. The Competition is a simulation of a fictional dispute between States before the International Court of Justice, requiring participants to address timely issues of public international law. The Competition is organized by the International Law Students Association.

Current edition: International Court of Justice, The Case Concerning the Clarent Belt. Materials for the current edition are available on the Competition website.

In order to contribute to the preparation by participants in the Competition, the Codification Division has compiled resources available on the UN Audiovisual Library of International Law (AVL) for the 2023 edition of the Competition. Students will be able to draw on the resources available on the AVL website, including the Lecture Series and the Mini-Series, together with the related materials used in the preparation of lectures, the Historic Archives, as well as the International Law Handbook.

Lecture Series

The Lecture Series contains a permanent collection of lectures of enduring value on virtually every subject of international law delivered by leading international law scholars and practitioners from different regions, legal systems, cultures and sectors of the legal profession. Each lecture is accompanied by a list of related materials linking to documents available online. Lectures are available in video and audio formats.

A. Courts and Tribunals
B. Law of Treaties
C. Peaceful Settlements of Disputes
D. Environmental Law
E. Peace and Security

Use of Force

F. States


G. Terrorism


The Mini-Series is a series of lectures delivered by leading international law scholars which aims to provide a general overview of the core topics of international law, primarily intended for users with basic or little knowledge of international law. Each mini-series provides a comprehensive introduction of the concerned topic and presents key issues for further study, which are often covered by specialized lectures in the Lecture Series.

A. Law of Treaties

The Law of Treaties
Mr. Duncan Hollis

  • Part I - Situating Treaties in History, Functions, and Sources

  • Part II - Defining the Treaty and Assessing the Alternatives

  • Part III - Treaty Formation - Negotiation, Consent, Entry into Force and Provisional Application

  • Part IV - Limiting Treaties - Validity Rules and Reservations

  • Part V - Treaties in Operation - Interpretation, Domestic Application, Amendments, and Treaty Exit

B. State Responsibility

Law of State Responsibility
Mr. Jorge E. Viñuales

  • Part I - General Overview on the Responsibility of States for Internationally Wrongful Acts

  • Part II - Conditions that Trigger the Responsibility of a State

  • Part III - Legal Consequences of an Internationally Wrongful Act and Invocation of the Responsibility of a State

Droit de la responsabilité internationale
M. Mathias Forteau

  • Partie I - Sources et évolution du droit de la responsabilité internationale

  • Partie II - La réclamation en responsabilité internationale 

  • Partie III - Les conditions d'engagement de la responsabilité internationale

  • Partie IV - Le contenu et la mise en œuvre de la responsabilité internationale

La Responsabilidad del Estado
Sr. Jorge E. Viñuales

  • Partie I - Aspectos generales de la responsabilidad estatal por
    hechos internacionalmente ilícitos

  • Partie II - Las condiciones que desencadenan la responsabilidad del Estado 

  • Partie III - Las consecuencias jurídicas de un hecho internacionalmente ilícito y
    la invocación de la responsabilidad de un Estado

C. International Environmental Law

International Environmental Law
Ms. Edith Brown Weiss

  • Part I - International Environmental Law in Context

  • Part II - Sources of International Environmental Law

  • Part III - Principles of International Environmental Law (Section 1/2)

  • Part III- Principles of International Environmental Law (Section 2/2)

  • Part IV - Legal Approaches to Controlling Pollution and Conserving Natural Resources and Fresh Water

  • Part V - Liability, Accountability and Compliance with International Environmental Law

Droit international de l'environnement
Mme Laurence Boisson de Chazournes

  • Partie I - La naissance du droit international de l'environnement et sa consécration

  • Partie II - Le développement normatif du droit international de l'environnement : La question des sources du droit de l'environnement

  • Partie III - À propos de certaines caractéristiques du droit international de l'environnement

  • Partie IV - Les principes du droit international de l'environnement (Section 1/3)

  • Partie IV - Les principes du droit international de l'environnement (Section 2/3)

  • Partie IV - Les principes du droit international de l'environnement (Section 3/3)

D. Peaceful Settlement of International Disputes

La solución pacífica de las controversias internacionales
Dr. Marcelo Kohen

  • Partie I - Solución pacífica de controversias: un principio fundamental del Derecho Internacional

  • Partie II - La solución jurisdiccional de controversias internacionales

Historic Archives

The Historic Archives is a unique resource which contains significant international law instruments. Each entry contains an introduction to a particular instrument prepared by a scholar or practitioner with expertise on the subject, information on its procedural history and related documents, as well as the text and status of the instrument. It is accompanied by available audiovisual materials relating to the negotiation and adoption of the instrument at meetings or diplomatic conferences.

A. Law of Treaties
B. Environmental Law

International Law Handbook

The International Law Handbook is a collection of instruments used by the Codification Division as study materials for its training courses under the Programme of Assistance. It is intended to be used as a general work of reference. It comprises four books, available free of charge on the AVL website: