About Us

Project Staff

Prof. Dr. Carsten Stahn
Project Leader

LL.M. (NYU), LL.M. (Cologne-Paris)


Carsten Stahn is Professor of International Criminal Law and Global Justice at Leiden University and Programme Director of the Grotius Centre for International Legal Studies. He has previously worked as Legal Officer in Chambers of the International Criminal Court (ICC) (2003-2008), as Reader in Public International Law and International Criminal Justice at Swansea University (2007-2008) and as Research Fellow at the Max Planck Institute for Comparative Public Law and International Law (2000-2003). He obtained his PhD degree ( summa cum laude) from Humboldt University Berlin after completing his First and Second State Exam in Law in Germany. He holds LL.M. degrees from New York University and Cologne - Paris I (Panthéon-Sorbonne).

Jens Iverson
Assistant Professor

J.D. (University of California, Hastings), B.A. (Yale)

tel.: 0031 (0)70 800 9358
twitter: @JensIverson

Jens Iverson is an Assistant Professor of Public International Law and an attorney. He has instructed students at Leiden University since 2011 in undergraduate, Masters and LL.M. programs.  A member of the California Bar, the Thurston Society, and the Order of the Coif, he received his Juris Doctor cum laude from the University of California, Hastings, and his Bachelor of Arts from Yale University. He has worked extensively with the Cambodian Genocide Program, the Documentation Centre of Cambodia, and the Coalition for the International Criminal Court. Additionally, he has worked or consulted for the American NGO Coalition for the ICC, the Alameda County Public Defender, the Center for Gender and Refugee Studies, and the American Civil Liberties Union’s National Prison Project, as well as His Honor Judge Sterling Johnson Jr. of the Eastern District of New York. As the co-founder of a human rights clinic, he helped represent the former Prime Minister of Haiti in a successful petition to the Inter-American Commission on Human Rights which ultimately resulted in a landmark ruling requiring Haitian prison reform. He has practiced at the International Criminal Tribunal for the former Yugoslavia for over three years on both the Popović et al. and Prlić et al. cases.

Selected Publications
  • Eight Perspectives on Yvon Neptune v. Haiti, Hastings International and Comparative Law Review, Vol. 32, No. 2, Summer 2009.  
  • The Continuing Functions of Article 98 of the Rome Statute, Goettingen Journal of International Law, Vol. 4, 2012, 131-151. 
  • Transitional Justice, Jus Post Bellum and International Criminal Law: Differentiating the Usages, History and Dynamics,  The International Journal of Transitional Justice, Vol. 7, 2013, 413–433 ; doi: 10.1093/ijtj/ijt019.
  • Revolution or Reform: Has Humanitarianism Established a New Legal Order? Should It? Leiden Journal of International Law, Vol. 27, 2014, 269-281; doi:10.1017/ S0922156513000733.
  • Contrasting the Normative and Historical Foundations of Transitional Justice and Jus Post Bellum: Outlining the Matrix of Definitions in Comparative Perspective, in Jus Post Bellum, 2014, Oxford University Press.
  • Exploring the Normative Foundations of Jus Post Bellum: An Introduction, with Jennifer Easterday and Carsten Stahn, in Jus Post Bellum, 2014, Oxford University Press.
  • Epilogue: Jus Post Bellum - Strategic Analysis and Future Directions, with Jennifer Easterday and Carsten Stahn, in Jus Post Bellum, 2014, Oxford University Press.

Jennifer Easterday

J.D. (UC Berkeley), B.A. (UC San Diego)
Jennifer Easterday is a Researcher for the Jus Post Bellum Project and a lawyer specializing in international criminal law. She previously worked for International Criminal Law Services, an NGO based in The Hague, on a variety of international criminal law projects including drafting training materials tailored to the Balkans region as part of any OSCE/ODIHR – ICTY legacy project, funded by the EC. She also worked on various international criminal law capacity building projects in Uganda and Rwanda, and other projects related to international criminal justice. She has also worked as a Senior Research and Trial Monitor for the UC Berkeley War Crimes Studies Center, researching and monitoring the Special Court for Sierra Leone trial of Charles Taylor and developing projects related to trial monitoring at other international and hybrid tribunals. She has experience at the ICTY and with other international criminal law and human rights NGOs in the United States and Latin America, including serving as a consultant for the Open Society Justice Initiative. She received her JD from the University of California, Berkeley School of Law and is a member of the California State Bar.

Selected Publications
  • Judging Complementarity: the Case of Rules v. Standards (forthcoming)
  • "Introductory case note: International Criminal Tribunal for the Former Yugoslavia: Prosecutor v. Šljivančanin,” American Society of International Law, International Legal Materials (Vol. 50, no. 3, May 2011)
  • "Prosecuting those who Bear Greatest Responsibility: The Trial of Charles Taylor, Part I,” UC Berkeley War Crimes Studies Center (2010).
  • "Special Report on the Rule 98 Pleadings in Prosecutor v. Taylor: Defense Motion for Acquittal on Basis of Insufficient Evidence,” UC Berkeley War Crimes Studies Center (2009).
  • "Obscuring Joint Criminal Enterprise at the SCSL,” Berkeley Journal of International Law’s Publicist (2009).
  • "Deciding the Fate of Complementarity: A Colombian Case Study,” Arizona Journal of International and Comparative Law (Vol. 26, no. 1, 2009).




Jus Post Bellum: Mapping the Normative Foundations is Open Access!

The Jus Post Bellum Project is excited to announce that Jus Post Bellum: Mapping the Normative Foundations is open access! We invite you to download this foundational work here! Of course, if you wish to buy the hard copy or read more about the volume, published by Oxford University Press, it is available in the Oxford University Press catalogue. The volume provides a comprehensive analysis of the laws and norms that apply to the process of ending war and building peace; systematically examines the merits and pitfalls of jus post bellum, drawing on theoretical inquiry, comparison to different bodies of international law, and key case-studies; and critically assesses the practical relevance of the theory of jus post bellum to the actual reality of post-conflict situations.


Article on JPB, TJ, & ICL

Jens Iverson, Researcher in International Law at The Jus Post Bellum Project, recently published an article on JPB, Transitional Justice, and International Criminal Law in the highly-ranked International Journal of Transitional Justice.


Conference Report

The Jus Post Bellum Launch Conference Report is available.

On 31 May and 1 June 2012, the Jus Post Bellum Project was proud to host its launch conference, “‘Jus-Post-Bellum’: Mapping the normative foundations.” The Conference Report focuses on the dialogue that occurred at the conference. It is impossible to capture the depth of the discussions that took place over the two-day conference, and therefore, as mentioned at the conference, we encourage participants and presenters to continue to debate on the project’s Virtual Research Environment. We are thankful to all participants and to attendees for sharing their insights.

Please visit the conference website for a wealth of material on Jus Post Bellum.


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