Dr Matthew Gillett

Senior Lecturer
School of Law
Dr Matthew Gillett



Dr. Matthew Gillett is a generalist international lawyer with extensive experience before the international courts. For almost 15 years, he worked in international organisations in The Hague (particularly the International Criminal Court ("ICC") and the International Criminal Tribunal for the former Yugoslavia ("ICTY")), primarily as a Prosecution Trial Attorney and Appeals Counsel. He has also conducted investigations in various conflict zones, including as a Human Rights Officer with the United Nations Assistance Mission in Afghanistan ("UNAMA"). Matthew has published widely on matters relating to international law, peace and security and the environment. His works appear in publications such as the Journal of International Criminal Justice, the Washington University Global Studies Law Review, the International Criminal Law Review, the Criminal Law Forum, the Australian International Law Journal, the Journal of Law and Medicine, and the Yale Journal of International Affairs. His monograph titled "Prosecuting Environmental Harm before the International Criminal Court" is under contract with Cambridge University Press (forthcoming 2022). He has won multiple awards for his academic work, including the Inaugural Benjamin B. Ferencz Essay Competition and the Sherman Emerging Scholar prize. Matthew has led and participated in a range of projects, including inter-disciplinary work on hate speech (which resulted in the Hartford Guidelines on Speech Crimes), assisting the International Crimes Division of Uganda, assisting the Special Jurisdiction for Peace in Colombia, and training prosecutors in Kenya. His work encompasses: International Criminal Law; Human Rights; Terrorism and Counter-Terrorism; Procedure and Evidence; Open-Source investigations; the Environment; International Humanitarian Law; Mediation; Speech Crimes; and Aggression.


  • PhD Leiden University,

  • LL.M University of Michigan–Ann Arbor,

  • LL.B University of Otago,

  • B.A. (political science) University of Otago,

Research and professional activities

Research interests

Environmental Law

Open to supervise

International Criminal Law

Open to supervise

Terrorism and Counter-Terrorism

Open to supervise

Conferences and presentations

Gender and Early Warning of Genocide

Invited presentation, Adjudicating Gender-Based Persecution at the ICC and Beyond - Northumbria, Adjudicating Gender-Based Persecution at the ICC & Beyond: A Monumental Step and the Challenges that Lie Ahead Conference, Newcastle upon Tyne, United Kingdom, 7/10/2021

Teaching and supervision

Current teaching responsibilities

  • Foundations of Human Rights (HU100)

  • Human Rights Organisations: International and Regional Institutions (HU200)

  • Human Rights: Theories and Applications (HU901)

  • Final Year Research Project (LW304)

  • The Protection of Human Rights in Armed Conflict and Situations of Acute Crisis (LW808)


Journal articles (12)

D’Alessandra, F. and Gillett, M., (2019). The War Crime of Starvation in Non-International Armed Conflict. Journal of International Criminal Justice. 17 (4), 815-847

Gillett, M. and Lostal, M., (2017). “Reflexiones Sobre el Caso Prlić et al.”. En Letra: Derecho Penal. 3 (5)

Gillett, M., (2017). Testing the Limits of the Law Against Those Who Test the Tribunal’s Limits. Journal of International Criminal Justice. 15 (4), 775-797

Gillett, M. and Ventura, M., (2014). “The Fog of War: Prosecuting Illegal Uses of Force as Crimes Against Humanity”. Washington University Global Studies Law Review

Gillett, M., (2013). The Anatomy of an International Crime: Aggression at the International Criminal Court. International Criminal Law Review. 13 (4), 829-864

Gillett, M., (2012). The Call of Justice: Obligations Under the Genocide Convention to Cooperate with the International Criminal Court. Criminal Law Forum. 23 (1-3), 63-96

Gillett, M. and Schuster, M., (2011). Fast-track Justice: The Special Tribunal for Lebanon Defines Terrorism. Journal of International Criminal Justice. 9 (5), 989-1020

Gillett, M., (2010). “Victim Participation at the International Criminal Court”. Australian International Law Journal

Gillett, M. and Schuster, M., (2009). The Special Tribunal for Lebanon Swiftly Adopts Its Rules of Procedure and Evidence. Journal of International Criminal Justice. 7 (5), 885-909

Gillett, M., (2008). “Assisted Arrest: Ending Impunity at the ICC”. Yale Journal of International Affairs

Gillett, M. and Gillett, G., (2008). “Intent, the Ethos of a Caring Society and Justice”. Journal of Law and Medicine. 16 (2)

Gillett, M., (2003). “Analysing America’s War on Terrorism: Preemptive Self-Defence in International Law”. New Zealand Students’ Law Journal

Books (1)

Gillett, M., The Prosecution of Environmental Harm before the International Criminal Court. Cambridge University Press

Book chapters (6)

Gillett, M., Animals in Protected Zones. In: Animals in the International Law of Armed Conflict. Editors: Peters, A., de Hemptinne, J. and Kolb, R., . Cambridge University Press forthcoming

Gillett, M., “Article 7(1)(b): Extermination”. In: Commentary on the Law of the International Criminal Court, (“Klamberg Commentary”). Case Matrix Network

Gillett, M., (2017). “Chapter 10: Eco-struggles: using international criminal law to protect the environment during and after non-international armed conflict”. In: Environmental Protection and Transitions from Conflict to Peace Clarifying Norms, Principles, and Practices. Oxford University Press. 0191087580. 9780191087585

Gillett, M., (2017). “Chapter 8: Collective Dislocation: Crimes of Displacement, Property-Deprivation and Discrimination under International Criminal Law”. In: International Law and the Rights of those Displaced by Armed Conflict

Gillett, M., (2013). “Chapter 6: Environmental damage and international criminal law”. In: Securing the Rights of Future Generations: Sustainable Development and the International Criminal Law Regime in Practice

Gillett, M., (2012). “Prosecuting Environmental Damage under International Criminal Law”. In: Selected Proceedings of 2010 European Society of International Law Conference in Cambridge

Reports and Papers (3)

Gillett, M., International Criminal Tribunal for the former Yugoslavia: Manual on Developed Practices

Gillett, M., (2018). The Peace and Justice Initiative: submission on Speech Crimes for the Crimes Against Humanity Convention

Gillett, M. and Wilson, R., (2017). The Hartford Guidelines on Speech Crimes in International Criminal Law

Other (3)

Gillett, M., « Le travail du Bureau du Procureur devant les Tribunaux pénaux internationaux »,Institut International de Recherche sur la Conflictualité

Gillett, M., (2007).“Intrepid Justice: Prosecutorial Discretion at the International Criminal Court”. New Zealand International Review

Gillett, M., (2007).““International Law Issues in the South Pacific” edited by Geoff Leane and Barbara von Tigerstrom (Ashgate Publishing Limited, 2005)”, (Book Review). New Zealand International Review



5NW.8.11, Colchester Campus