Letizia Lo Giacco
Letizia Lo Giacco is an Assistant Professor in International Law at the Grotius Centre for International Legal Studies of Leiden University. Her research explores structural questions of international law, with a focus on courts and judicial practices in global governance. Letizia is the co-founder of the Leiden Hub on the Theory and History of International Law, an interdisciplinary platform for theoretical and/or historical questions on international law, and is a founding member and co-Chairperson of the European Society of International Law interest group on international criminal justice.
Letizia holds an LLD (Doctor of Laws degree) in International Law from Lund University and an LLM in International Humanitarian Law from the Geneva Academy of International Humanitarian Law and Human Rights (Graduate Institute for International Development Studies/University of Geneva). She held positions as visiting research fellow at the Max Planck Institute for Comparative Public Law and International Law in Heidelberg, at the Amsterdam Centre of International Law, and at the Manchester International Law Centre, to which she was also an invited guest lecturer in international law (2018 and 2019).
Letizia’s research combines theory and practice of international law and looks at transnational phenomena through the lens of public international law. She has published on questions of authority and formation of international law, looking at the practice of international and domestic courts in the adjudication of international law, and on the role of judicial decisions in the argumentation of international law. Letizia’s work Judicial Decisions in International Law Argumentation is currently under contract with Hart Publishing (Studies in International Law series).
She is a contributor to the ERC-sponsored project “TRICI-Law” on the Theory and Philosophy of Customary International Law and its Interpretation, and a regular participant in the Max Planck Trialogues on the Law of Peace and War, ongoing since 2016.
Prior to joining Leiden University, Letizia was an adjunct in public international law, international criminal law and international humanitarian law within the LLM in International Human Rights Law at Lund University Faculty of Law (Sweden). She also gained professional experience in international institutions including the UN Assistance to the Khmer Rouge Trials (UNAKRT), the Special Tribunal for Lebanon, and the European Commission (Kimberly Process).
Letizia has served as a peer-reviewer for the Nordic Journal of International Law (Brill), the International Review of the Red Cross (Cambridge University Press), and Leiden Journal of International Law (Cambridge University Press).
At Leiden University, Letizia is module-convener for Principles of Public International Law and International Criminal Law within the International Justice program at Leiden University College. She is also a co-instructor of The Law and Practice of International Organizations within the LLM in Public International Law.
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