Kimberley Trapp

Kimberley Trapp

BA, LLB, BCL (McGill); LLM, PhD (Cambridge)

Senior Lecturer in Public International Law

+44 (0)20 3108 8382


Kimberley Trapp is a Senior Lecturer in Public International Law at the Faculty of Laws, UCL, and is co-editor of Current Legal Problems. Prior to joining UCL in 2012, she was a Lecturer at Newnham College and an Affiliated Lecturer at the Faculty of Law, University of Cambridge. Kimberley obtained a BA (philosophy), BCL and LLB (all with great distinction) from McGill University before working for several years as an attorney at Davis Polk & Wardwell (NY, Hong Kong). Following these years of corporate practice, Kimberley returned to academia, completing her LL.M and PhD at the University of Cambridge. During her doctoral studies, Kimberley clerked for Vice-President Al-Kasawneh and Judge Simma at the International Court of Justice. Her doctoral thesis was awarded the Cambridge Yorke Prize for a dissertation of distinction, and is the basis of her OUP monograph State Responsibility for International Terrorism (2011).

Kimberley collaborates as an academic advisor on issues of international humanitarian and human rights law with various NGOs and Government departments, has published in leading academic journals on issues relating to the use of force, State responsibility, the interaction between international humanitarian law and terrorism suppression, and the settlement of international disputes, and has presented related scholarship at various forums, including the Annual Meetings of the Canadian Council on International Law and American Society of International Law. She is a member of the Board of Editors of the Cambridge Journal of International and Comparative Law and the Journal of the Use of Force in International Law and serves on the Advisory Board of the Inter Gentes McGill Law Journal.


Kimberley’s research interests cover a range of subject matters in Public International Law, including:
· state responsibility;
· the use of force in international relations;
· international humanitarian law;
· international terrorism;
· the judicial settlement of disputes


· State Responsibility for International Terrorism (Oxford University Press, 2011), reviewed by:
– Helmut Philipp Aust, 23 European Journal of International Law (2012) 275 and Global Law Books
– Kenneth Anderson, Lawfare
· Criminalité en Mer / Crimes at Sea, with E. Papastavridis (eds), Hague Academy of International Law (2014)

Recent Articles & Book Chapters
· Actor-Pluralism and the ‘Turn to Responsibility’ in the Jus ad Bellum: ‘Unwilling or Unable’ in Context, 2(2) Journal on the Use of Force in International Law (2015), 1
· Of Dissonance and Silence; State Responsibility in the Bosnia Genocide Case, 62(2) Netherlands International Law Review (2015), 243
· Shared Responsibility and Non-State Terrorist Actors, 62(1) Netherlands International Law Review (2015), 141
· Self-defence in Response to Armed Attacks by Non-State Actors, in Marc Weller (ed.), OUP Handbook on the Use of Force, Oxford University Press (2015)
o Reviewed by Kenneth Anderson, Lawfare
· La Criminalité en Mer: L’Approche du Droit International, in Trapp and Papastavridis (eds), Criminalité en Mer / Crimes at Sea, Hague Academy of International Law (2014)
· “The Interaction of the International Terrorism Suppression Regime and IHL in Domestic Criminal Prosecutions” in Jinks, Maogoto and Solomon (eds), Applying International Humanitarian Law in Judicial and Quasi-Judicial Bodies: International and Domestic Aspects, TMC Asser Press (2014)
· Terrorism and State Responsibility in Ben Saul (ed.), Research Handbook in Terrorism and International Law, Edgar Elgar Publishing (2014)
· Great resources mean great responsibility: a framework of analysis for assessing compliance with API obligations in the information age, in Dan Saxon (ed.), International Humanitarian Law and the Changing Technology of War, Martinus Nijhoff (2013) 153
· Holding States Responsible for Terrorism before the International Court of Justice, 3 Journal of International Dispute Settlement (2012) 1
· R v Mohammed Gul: Are You a Terrorist if You Support the Syrian Insurgency?, EJIL: Talk!, 14 March, 2012 (2,5000 words)
· Smooth Runs the Water Where the Brook is Deep: The obscured complexities of Germany v Italy, 1 Cambridge Journal of International and Comparative Law (2012) 153-168 (with Alex Mills)
· Uses of Force against Civil Aircraft, EJIL: Talk!, 28 June, 2011 (3,000 words)

Current Teaching

Public International Law

International Human Rights Law (convenor)
War Law (convenor)
Foundations and Principles of International Law

PhD Supervision
Kimberley welcomes approaches for supervision from prospective PhD students. She is currently supervising Christopher O’Meara (jus ad bellum) and Luis Viveros (international human rights law), and is acting as second supervisor for Johanna Sanchez Mawkin (dispute resolution and self-determination) and Gaiane Nuridzhanian (international criminal law).