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Dr. John Heieck, JD, LLM, PhD

Dr. John Heieck, JD, LLM, PhD

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Join date: Jan 18, 2026

John holds a PhD in Law from the University of Kent (United Kingdom), an LLM in Public International Law from Leiden University (Netherlands), a JD (cum laude) from Creighton University School of Law, and a BA (magna cum laude) from the University of Notre Dame. His doctoral research on genocide prevention and state responsibility was published as a monograph and has been widely cited in international legal scholarship.


John’s research interests rest at the intersection of the law of armed conflict, international humanitarian law, human rights law, and issues of legitimacy and accountability in conflict and post-conflict settings.

John previously served with the Office of the Prosecutor at the International Criminal Tribunal for the former Yugoslavia (ICTY), supporting trial and appellate teams in cases involving war crimes, crimes against humanity, and genocide arising from the Balkan conflicts. His professional background also includes judicial clerkship experience, complex litigation practice, and senior academic appointments in public international law.


As Director of Research, John oversees a number of programs, including Project DESMA (Digital Ethnography and Social Media Analytics). At GCPA, Dr. Heieck focuses on ensuring that research and analytic products are methodologically sound, legally informed, and strategically relevant. He specializes in translating complex legal and political analysis into clear, decision-useful guidance for clients operating in contested, high-stakes environments.


Selected Publications:


  1. K.J. Heller & J. Heieck, “Mistrial: International Criminal Courts and Tribunals,” Max Planck Encyclopedia of International Procedural Law (Oxford University Press 2020).

 

  1. J. Heieck, A Duty to Prevent Genocide: Due Diligence Obligations among the P5 (Edward Elgar 2018).

 

  1. J. Heieck, “The Responsibility Not to Veto Revisited” in R. Barnes and V. Tzevelekos (eds.), Beyond Responsibility to Protect: Generating Change in International Law (Intersentia Publishing 2016).

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