Candidates
President
Marie O’Leary has had the privilege to spend the last two decades as an international law practitioner, focusing on international criminal & humanitarian law, as well as human rights. She was most recently Acting Principal Counsel of the Office of Public Counsel for the Defence (OPCD) of the International Criminal Court (ICC) and was working with the Office since 2013. Prior to the ICC, she worked at the United Nations’ International Criminal Tribunal for the former Yugoslavia (ICTY) with Defence, Amicus Prosecution, and Trial Chambers, and has served as a Legal Consultant for the Defence Offices of the Special Tribunal for Lebanon (STL). She is the current President of the Association of Defence Counsel (ADC-ICT) and currently serves on the ICC Bar Association (ICCBA) Working Group on the Code of Conduct, having previously served in the executive bodies of each association and on several working committees. She has dedicated significant time to capacity-building and training initiatives specifically for defence lawyers, recently co-authoring both a defence needs assessment and a Defence Counsel Handbook for Ukrainian practitioners, both developed/conducted with USAID Justice for All Activity support. She is called to the Bar of the State of Minnesota (U.S.) where she started her career with the Minneapolis City Attorney's Office and the State Public Defenders Office.
MARIE O'LEARY
Executive Council
HAYDEE DIJKSTAL
Haydee Dijkstal is a UK barrister and US attorney with over 15 years of experience practicing international criminal and human rights law before international tribunals including the ICC. Haydee’s practice includes work before the ICC, ICTY, SCSL, ECtHR, African Commission and Court on Human and Peoples’ Rights and various UN bodies. Haydee has been a member of legal teams before the International Criminal Court since 2011 representing parties including the defence, victims and Governments. Haydee has extensive experience with victim representation before the ICC. She is currently representing victims at the ICC in the Situation in Afghanistan and Situation in Ukraine, and previously acted on legal teams for victims in a number of other situations and to raise victims’ interests in Article 15 submissions. Other instructions before the ICC include acting on the defence team for Abdullah Al-Senussi in the Libya Situation; and on the legal team for the Kenyan Government. In addition, she has been instructed as counsel for amicus curiae submissions before the Court.
MEGAN HIRST
Megan Hirst is an Australian lawyer, practicing from the London bar. She has been working at and before the ICC since 2009, with a particular focus on victim participation. At the ICC she has undertaken victim representation in the Ongwen Case, the Bangladesh/Myanmar Situation and the Afghanistan Situation. From 2019 until 2022 she was International Lead Co-Lawyer for victims participating as civil parties in Case 002/02 at the Extraordinary Chambers in the Courts of Cambodia. Megan was previously a legal officer in the Registries of the ICC and the STL, primarily working on victim participation. Megan has previously served four terms on the Executive Council (2019-2021, 2023-2024, 2024-2025) and in 2019-2021 was also Vice President for Victims and a member of the Victims’ Committee.
Defence Committee
HASSAN ALHATTAB
International Criminal Law, Defense, and Criminal Justice Specialist with 25 Years of Experience
A distinguished legal professional specializing in international criminal law and human rights, with 25 years of experience in legal practice, advocacy, and strategic legal analysis. He has participated in international criminal investigations into war crimes and crimes against humanity, contributing to the examination and legal assessment of complex international criminal matters. In 2026, he was officially nominated by the United Nations Human Rights Council as one of eight qualified candidates worldwide for appointment to the mandate of United Nations Special Rapporteur on the situation of human rights in Eritrea. He provides comprehensive legal analysis and strategic advice in legal proceedings, pleadings, and briefs. His professional experience includes public law, oral advocacy, legal research, litigation, and the defense of complex criminal matters, with a strong commitment to justice, due process, and the protection of fundamental rights. He holds certificates in Humanitarian Needs Assessment and Towards a Better Response from the Humanitarian Academy at Harvard University, as well as a certificate in the Fundamentals of Legislation and Federal Law program at Harvard Law School. He also has experience in mediation, arbitration, dispute resolution, and settlement negotiations.
ANTA GUISSÉ
Anta Guissé has been a practising lawyer at the Paris Bar in France since 1999. Her working language is French, while she also speaks English. As a criminal defence lawyer, she has appeared regularly before national criminal courts and the Assize Court in particular. In addition, Ms Guissé has several years of experience appearing before the international jurisdictions. Between 2002 and 2010, she worked with several different defence teams before the International Criminal Tribunal for Rwanda, firstly as a legal assistant and then as counsel. In 2010, Ms Guissé had an assignment in a team of Legal Representatives of Victims before the International Criminal Court. She was also Defence Counsel at the Special Tribunal for Lebanon. Since 2012, Ms Guissé has been acting as an international lawyer for former Chairman KHIEU Samphân before the Extraordinary Chambers in the Courts of Cambodia (ECCC) and is currently Counsel for Mr. Yekatom at the ICC. Ms Guissé also regularly presents at training workshops for colleagues on the subject of international criminal justice.
JAMES ONALAJA
James Onalaja is an English Criminal Barrister with over 20 years’ experience, practising from 187 Chambers, London. He has undertaken postgraduate studies in ICL at Columbia Law School and obtained a Master of Laws in ICL (Cum Laude) from Amsterdam University. His practise focuses on: serious, complex and violent crimes, including matters with transnational and international law complexities; military court martials and; cases involving alleged human rights violations. He is admitted to the ICC’s and the Kosovo Specialist Chambers’ lists of counsel. In 2023/24, he completed a posting with the ICC’s Office of Public Counsel for the Defence (OPCD), assisting with its duties representing, protecting and promoting the interests of the defence and unrepresented suspects. Here, he led the development of OPCD’s advocacy training programme for junior lawyers and the delivery of the inaugural training sessions. He is an advocacy tutor to trainee lawyers in England and is experienced at providing Continuing Professional Development training to legal professionals. He conducts international trial monitoring and reporting on compliance with IHRL on behalf of EuroMed Rights. He assisted the defence team in Case 004 before the ECCC. He has also worked with members of the United Nations Human Rights Committee in preparing them for their 122nd Session and periodic oral dialogues with States re compliance with the ICCPR. He was recently appointed to the role legal consultant to the OPCD. James has served on the Amicus Committee for 3 terms, including as Committee Chair. He served on the Training Committee in 2020/21 and in the 2024/25 term where he was involved in the training of Indonesian and Cambodian lawyers in Jakarta on International Criminal Court trial advocacy. He has served 2 terms on the Legal Advisory Committee including recently as Chair. He looks forward to continuing to serve the ICCBA wherever required.
INGO KLAUS WAMSER
Ingo Klaus Wamser is admitted to the German bar since 2005 and was awarded the title of a Certified Criminal Law Specialist by the Munich bar in 2009. He is working on criminal law, cross-border and international criminal law and extradition cases before national courts and was appointed as duty counsel before the International Criminal Court. He is a specialist in disciplinary and contempt cases, served as Alternate Commissioner at the ICC, co-drafted the Code of Conduct for Counsel at the KSC, serves as disciplinary judge in Germany in his third term and in disciplinary related positions in international bar associations. As a founding member of the ICCBA Ingo contributed to the Membership and Professional Standards Advisory Committees in previous years. He is co-author of a commentary on the German Federal Lawyer’s Act, published on international and national criminal law topics and was lector for international law at an Austrian state university.
Victims Committee
NOOR ALAZAB
Dr. Noor Alazab is a lawyer, legal researcher, and PhD candidate in Philosophy at the University of Jordan. She holds a Master’s degree in Women’s Studies, with a thesis examining the legal and social realities of single mothers in Jordan. Her doctoral research focuses on punishment and the body through philosophical and legal approaches, with particular attention to feminist perspectives on criminal justice. She is the Founder and President of Kuni for Justice and Equality, a Jordanian non-governmental organization. She has experience in legal research, legal analysis, strategic litigation, and advocacy, with a focus on gender-based violence, accountability, and international criminal justice. From 2023 to 2025, she served as the Gender and Natural Diversity Focal Point within the International Criminal Court Bar Association. Her combined legal and academic experience enables her to contribute to the Victims Committee and the Legal Advisory Committee through rigorous legal analysis, the advancement of victims’ rights, and the promotion of international criminal law and human rights standards.
Counsel Support Staff Committee Committee
AIHAM ABOU DAHER (Affiliate Member)
I obtained my law degree from Damascus University in Syria in 2000. I have attended more than 150 court sessions and filed more than 150 lawsuits. From 2001 to 2003, I attended a three-hour-a-week legal training course at the Damascus Bar Association. In 2003, I received my license to practice law as a senior lawyer specializing in international criminal cases and defending the rights of war victims. I have practiced law in Syria and remain registered with the Damascus Bar Association as a senior lawyer to this day.
DR. ABBAS POORHASHEMI (Affiliate Member)
Dr. Abbas Poorhashemi is a scholar and expert in international criminal law, international human rights law, international humanitarian law, and international environmental law, with over two decades of academic and professional experience. He has served as a Registered Expert before the International Criminal Court (ICC) since 2023, providing expertise under Regulation 44 of the Court’s Regulations across the fields of international criminal law, humanitarian law, human rights law, and environmental law. He is currently serving as an elected member of the Counsel Support Staff Committee at the International Criminal Court Bar Association (ICCBA), a position he has held since 2024, and has been an Affiliate Member of the ICCBA since 2020. He holds a Ph.D. in International Law from the University of Strasbourg (2005) and completed a Postdoctoral Fellowship in International Law and Globalization at UQAM (2013). For over a decade, he served as Assistant Professor of International Law at IAU, teaching international criminal law, public international law, human rights, and international responsibility to J.D. and international LL.M. students, and has supervised more than 200 dissertations and theses. He is President of the Canadian Institute for International Law Expertise (CIFILE) and Editor-in-Chief of the CIFILE Journal of International Law (CJIL), a peer-reviewed publication advancing scholarship across international criminal law and related fields. He has authored or edited more than 100 publications.
Professional Standards Advisory Committee
JENS DIECKMANN
Jens Dieckmann is a German Lawyer. He is Founding and Senior Partner of Becher&Dieckmann in Bonn (Germany) as well as Associate Member of Chamber 9BR International (London, UK). Jens Dieckmann can offer clients more than 27 years of high level international litigation and negotiation practice in high profile cases. He has worked in and lead international teams of lawyers at various international criminal tribunals. In addition, he has a varied national and international practice as Counsel in International Human Rights Law as well as Asylum and Immigration Law. He provides consultancy to Governments and NGOs in the field of International Criminal Law and Asylum Law. He is appointed to the Expert Commission on Asylum by the Federal Board of Amnesty International, Germany. Since 2006, he is an elected member of the Board of ADC-ICT. In 2015/16, he was a member of the Drafters Committee and the Interim Board of the ICCBA. He served the ICCBA inter alia as Vice President for Victims (2017/2018 and 2018/2019) and was Chair of the Victims Committee in 2017/2018 and 2018/2019. He was member of the Executive Council 2016-2019 and of the Victims Committee 2023/2024. Since 2011 he is CLR, Associate Counsel, for Victims in the ICC Banda Case.
INGO KLAUS WAMSER
Ingo Klaus Wamser is admitted to the German bar since 2005 and was awarded the title of a Certified Criminal Law Specialist by the Munich bar in 2009. He is working on criminal law, cross-border and international criminal law and extradition cases before national courts and was appointed as duty counsel before the International Criminal Court. He is a specialist in disciplinary and contempt cases, served as Alternate Commissioner at the ICC, co-drafted the Code of Conduct for Counsel at the KSC, serves as disciplinary judge in Germany in his third term and in disciplinary related positions in international bar associations. As a founding member of the ICCBA Ingo contributed to the Membership and Professional Standards Advisory Committees in previous years. He is co-author of a commentary on the German Federal Lawyer’s Act, published on international and national criminal law topics and was lector for international law at an Austrian state university.
Legal Advisory Committee
FRANCK ARNAUD (Full Member)
Depuis quinze ans, j’interviens sur des affaires complexes à dimension internationale. Mon activité s’est concentrée sur des dossiers impliquant des mandats d’arrêts européens, des saisies pénales internationales, des affaires de corruption, des affaires criminelles, ainsi que sur des enquêtes relatives à des morts suspectes. Mon expérience s’est également enrichie par mon engagement auprès des demandeurs d’asile. Dans ce cadre, j’ai travaillé sur des affaires portant sur des crimes de guerre, des crimes contre l’humanité et des détentions arbitraires, autant de thématiques en lien direct avec le droit international pénal et la compétence de la Cour pénale internationale. En parallèle, je suis membre du Cybercrime Committee (ItechLaw, USA), où je contribue aux réflexions internationales sur la criminalité numérique et ses implications pour la protection des droits fondamentaux. Je suis également officier de réserve auprès de l’état-major de l’armée de terre en qualité de Legal Advisor (LEGAD). À ce titre, j’apporte mon expertise en droit international humanitaire (DIH) pour accompagner les forces armées dans la prise de décision et l’adaptation aux normes internationales.
NOOR ALAZAB (Full Member)
Dr. Noor Alazab is a lawyer, legal researcher, and PhD candidate in Philosophy at the University of Jordan. She holds a Master’s degree in Women’s Studies, with a thesis examining the legal and social realities of single mothers in Jordan. Her doctoral research focuses on punishment and the body through philosophical and legal approaches, with particular attention to feminist perspectives on criminal justice. She is the Founder and President of Kuni for Justice and Equality, a Jordanian non-governmental organization. She has experience in legal research, legal analysis, strategic litigation, and advocacy, with a focus on gender-based violence, accountability, and international criminal justice. From 2023 to 2025, she served as the Gender and Natural Diversity Focal Point within the International Criminal Court Bar Association. Her combined legal and academic experience enables her to contribute to the Victims Committee and the Legal Advisory Committee through rigorous legal analysis, the advancement of victims’ rights, and the promotion of international criminal law and human rights standards.
HASSAN ALHATTAB (Full Member)
International Criminal Law, Defense, and Criminal Justice Specialist with 25 Years of Experience
A distinguished legal professional specializing in international criminal law and human rights, with 25 years of experience in legal practice, advocacy, and strategic legal analysis. He has participated in international criminal investigations into war crimes and crimes against humanity, contributing to the examination and legal assessment of complex international criminal matters. In 2026, he was officially nominated by the United Nations Human Rights Council as one of eight qualified candidates worldwide for appointment to the mandate of United Nations Special Rapporteur on the situation of human rights in Eritrea. He provides comprehensive legal analysis and strategic advice in legal proceedings, pleadings, and briefs. His professional experience includes public law, oral advocacy, legal research, litigation, and the defense of complex criminal matters, with a strong commitment to justice, due process, and the protection of fundamental rights. He holds certificates in Humanitarian Needs Assessment and Towards a Better Response from the Humanitarian Academy at Harvard University, as well as a certificate in the Fundamentals of Legislation and Federal Law program at Harvard Law School. He also has experience in mediation, arbitration, dispute resolution, and settlement negotiations.
HARIHARA ARUN SOMASANKAR (Associate Member)
Harihara Arun Somasankar is an advocate with extensive experience in litigation, international law, criminal law, constitutional law, arbitration and human rights. He has appeared before the High Courts and various courts and tribunals, handling complex civil and criminal matters and advising on significant legal and constitutional issues. He has a particular interest in international criminal law and the relationship between domestic justice systems and international legal institutions. His professional work reflects a commitment to the rule of law, access to justice, professional integrity and the advancement of the legal profession. He was elected as a member of the ICCBA Legal Advisory, contributing to the Committee’s work in advising the ICCBA Executive Committee, other committees and its membership on legal issues. This experience provided him with valuable insight into the functioning of the Committee and the legal needs of the international criminal law community. He is the author and originator of “Staragonism: The Theory of Correctional Administration and Prison Reform,” an original legal theory proposing a new perspective on correctional administration, rehabilitation and prison reform, with the objective of contributing to contemporary legal thought and the development of criminal justice systems. Having previously served on the ICCBA Constitutional Organs, he seeks the opportunity to serve once again with experience, independence and a commitment to advancing the interests of the international criminal law community.
Training Committee
MÉLISSA BEAULIEU LUSSIER (Associate Member)
Mélissa Beaulieu Lussier is a Canadian lawyer and a member of the Quebec Bar since 2014. Since her admission to the Bar, she has practised criminal law both in Canada and before the International Criminal Court (ICC). She has served on the Defence teams of Mr Bosco Ntaganda (DRC), Mr Patrice-Edouard Ngaïssona (CAR), and Mr Al Hassan ag Abdoul Aziz (Mali). Over the years, Ms Beaulieu Lussier has represented accused persons at every stage of proceedings at the ICC, conducted investigations in multiple countries, drafted legal submissions at both trial and appellate levels, and presented a wide range of oral arguments before the Court. She is currently Counsel for Mr Al Hassan and a member of the team representing victims in the case of Mr Abd-Al-Rahman (Darfur) before the ICC. Ms Beaulieu has also been actively involved with the ICCBA for many years. As a member of the Training Committee for the past two terms, she has contributed to the development of many trainings, including the training for Rule 74 duty counsel which she has delivered on numerous occasions. She regularly lectures at universities and bar associations around the world and has also supervised Master’s theses at the University of Amsterdam. Ms Beaulieu strongly believes that sharing experiences across the legal profession strengthens international criminal law and that investing in the training and professional development of lawyers is essential to the effective functioning of the field.
MYLÈNE DIMITRI (Full Member)
Ms. Dimitri brings over two decades of experience to her role before international courts. Currently, she serves as the Lead Counsel for Alfred Yekatom in the Central African Republic II Situation at the International Criminal Court and has also worked as Associate Counsel for Mr. Jean-Pierre Bemba (Article 70). At the International Criminal Tribunal for Rwanda (ICTR), Ms. Dimitri represented Dr. Augustin Ngirabatware, the Minister of Planning, as his Lead Counsel through both trial and appeal stages. Additionally, she was Co-Counsel for Arsène Shalom Ntahobali, the son of the Minister of Women’s Affairs, Pauline Nyiramasuhuko, in their trial and appeal proceedings. Ms. Dimitri has also navigated trials in absentia, notably co-representing Mustafa Badreddine’s rights and interests at the Special Tribunal for Lebanon until the proceedings were terminated. Subsequently, she transitioned to a Legal Consultant role for Mr. Hassan Habib Merhi. In Canada, she undertook a ground-breaking trial under universal jurisdiction, defending Désiré Munyaneza against charges related to the 1994 Rwandan Genocide before both the Quebec Superior Court and the Quebec Court of Appeal. Ms. Dimitri is also an esteemed speaker, having delivered numerous lectures and conferences on open-source investigations and the intricacies of defending suspects in wartime. She was also part of a group of experts invited by the Nuremberg Academy to debate on the length of the proceedings before the ICC. Additionally, she has conducted specialized training for Ukrainian lawyers, further showcasing her commitment to legal education and international human rights. She was also invited to provide a presentation on international criminal courts and tribunals to the appeals judges in Quebec, Canada during their annual training.
DESPOINA ELEFTHERIOU (Associate Member)
Despoina Eleftheriou is a Greek lawyer admitted to the Thessaloniki Bar and a Case Manager and Legal Assistant before the International Criminal Court. She is currently serving on the Ngaïssona Defence team and she previously worked on the Blé Goudé Defence team. Within the ICCBA, she served as Chair of the Counsel Support Staff Committee, where she led the development of the ICCBA “Welcome Package” and promoted practical resources for counsel and support staff. Beyond the Court, she interned at the Hellenic Ministry of Foreign Affairs, Department for International Relations in Thessaloniki. She holds an LL.B. from the Aristotle University of Thessaloniki, an LL.M. in International Studies with Honours, and an LL.M. in International Criminal Law from the University of Amsterdam, graduating cum laude in the joint programme with Columbia University in the City of New York.
HANEEN GHALI (Associate Member)
Haneen is an international criminal law practitioner from Syria; she has experience in the defence in the International Criminal Court (ICC) and the Kosovo Specialist Chambers. She is currently part of the defence team of Mr. Ali Abd Al Rahman as a legal assistant. Prior to her current position, she was a member of the defence teams of Mr Mokom and Mr. Al Hassan. Haneen has experience working on SGBV (UN Team of Experts on the Rule of Law and Sexual Violence), reparations, and a wide range of procedural issues related to international criminal proceedings, namely disclosure and management of evidence. Haneen is a graduate of LLM Public International Law from Leiden University and the Sorbonne.
ANTA GUISSÉ (Full Member)
Anta Guissé has been a practising lawyer at the Paris Bar in France since 1999. Her working language is French, while she also speaks English. As a criminal defence lawyer, she has appeared regularly before national criminal courts and the Assize Court in particular. In addition, Ms Guissé has several years of experience appearing before the international jurisdictions. Between 2002 and 2010, she worked with several different defence teams before the International Criminal Tribunal for Rwanda, firstly as a legal assistant and then as counsel. In 2010, Ms Guissé had an assignment in a team of Legal Representatives of Victims before the International Criminal Court. She was also Defence Counsel at the Special Tribunal for Lebanon. Since 2012, Ms Guissé has been acting as an international lawyer for former Chairman KHIEU Samphân before the Extraordinary Chambers in the Courts of Cambodia (ECCC) and is currently Counsel for Mr. Yekatom at the ICC. Ms Guissé also regularly presents at training workshops for colleagues on the subject of international criminal justice.
HARIHARA ARUN SOMASANKAR (Associate Member)
Harihara Arun Somasankar is an advocate with extensive experience in litigation, international law, criminal law, constitutional law, arbitration and human rights. He has appeared before the High Courts and various courts and tribunals, handling complex civil and criminal matters and advising on significant legal and constitutional issues. He has a particular interest in international criminal law and the relationship between domestic justice systems and international legal institutions. His professional work reflects a commitment to the rule of law, access to justice, professional integrity and the advancement of the legal profession. He was elected as a member of the ICCBA Legal Advisory, contributing to the Committee’s work in advising the ICCBA Executive Committee, other committees and its membership on legal issues. This experience provided him with valuable insight into the functioning of the Committee and the legal needs of the international criminal law community. He is the author and originator of “Staragonism: The Theory of Correctional Administration and Prison Reform,” an original legal theory proposing a new perspective on correctional administration, rehabilitation and prison reform, with the objective of contributing to contemporary legal thought and the development of criminal justice systems. Having previously served on the ICCBA Constitutional Organs, he seeks the opportunity to serve once again with experience, independence and a commitment to advancing the interests of the international criminal law community.
Amicus Committee
FRANCK ARNAUD (Full Member)
Depuis quinze ans, j’interviens sur des affaires complexes à dimension internationale. Mon activité s’est concentrée sur des dossiers impliquant des mandats d’arrêts européens, des saisies pénales internationales, des affaires de corruption, des affaires criminelles, ainsi que sur des enquêtes relatives à des morts suspectes. Mon expérience s’est également enrichie par mon engagement auprès des demandeurs d’asile. Dans ce cadre, j’ai travaillé sur des affaires portant sur des crimes de guerre, des crimes contre l’humanité et des détentions arbitraires, autant de thématiques en lien direct avec le droit international pénal et la compétence de la Cour pénale internationale. En parallèle, je suis membre du Cybercrime Committee (ItechLaw, USA), où je contribue aux réflexions internationales sur la criminalité numérique et ses implications pour la protection des droits fondamentaux. Je suis également officier de réserve auprès de l’état-major de l’armée de terre en qualité de Legal Advisor (LEGAD). À ce titre, j’apporte mon expertise en droit international humanitaire (DIH) pour accompagner les forces armées dans la prise de décision et l’adaptation aux normes internationales.
DR. PAUL BRADFIELD (Full Member)
Paul Bradfield is a graduate of University of Galway (BA, LLB), University College Cork (LLM in Criminal Justice) and the Honorable Society of Kings Inns (Barrister-at-Law), and was called to the bar in 2009. He completed his PhD at the Irish Centre for Human Rights at the University of Galway in 2021, with his thesis assessing the use of amnesty as a response to conflict in northern Uganda. Paul has worked at various international courts in both Defence and Prosecution roles, including the tribunals for the former Yugoslavia, Rwanda, and the International Criminal Court. He is an admitted member of the ICC's List of Counsel. In the field, he has worked for the UN Office of the High Commissioner for Human Rights in Uganda, and for Irish Rule of Law International in Malawi, on a range of transitional justice, human rights and access to justice issues. Domestically, he was previously a Prosecutor in the Central Criminal Court for the Office of the Director of Public Prosecutions.







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