ICC Moot Court Competition
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About the ICC Moot Court Competition
The ICC Moot Court Competition is organised by the International Criminal Court itself in partnership with Leiden University’s Grotius Centre for International Legal Studies. Since its inception in 2008, it has become the foremost training ground for future international criminal law practitioners, simulating cases before the world’s permanent international criminal tribunal.
🏛️ History & Origins
Launched to coincide with the tenth anniversary of the Rome Statute’s adoption, the ICC Moot was specifically designed to deepen student engagement with international criminal justice. Unlike moots that simulate hypothetical courts, participants here plead before judges within the actual ICC courtrooms in The Hague during the international rounds. The competition draws over 100 teams from every continent, with regional rounds in Africa, Asia-Pacific, Europe, Latin America, and North America feeding into the global final.
🌍 Global Significance
This moot occupies a unique niche: it is the only moot court officially endorsed and co-organised by the ICC itself. Judges, prosecutors, and defence counsel from the Court routinely serve on benches. Winning teams gain unparalleled exposure to the international criminal justice community. The competition directly shapes the pipeline of ICC interns, legal officers, and counsel. Many former participants now serve at the Office of the Prosecutor, Registry, or Defence teams at the Court.
What Makes It Unique?
Several features distinguish the ICC Moot from all other competitions. First, the subject matter is exclusively international criminal law—covering genocide, war crimes, crimes against humanity, and the crime of aggression under the Rome Statute. Second, teams must argue from three distinct perspectives: the Prosecution (Office of the Prosecutor), the Defence, and Victims’ Legal Representatives—a trichotomy that mirrors the Court’s actual procedural architecture. Third, the international final rounds take place inside the ICC’s own courtrooms in The Hague, offering unmatched realism. Fourth, the competition tests not just legal reasoning but deep knowledge of international criminal procedure, modes of liability, evidentiary standards, and complementarity—areas rarely tested in other moots.
Competition Structure
👥 Team Composition
Each team consists of 2–4 oralists and up to 2 researchers/memorialists. A team coach (faculty member) is required. Teams must be prepared to argue for the Prosecution, Defence, and Victims’ Participants—all three roles across rounds.
📝 Written Phase
Teams submit written memorials for the Prosecution and Defence (and in some years, Victims’ submissions). Memorials follow ICC procedural filing formats—mirroring real filings before Pre-Trial, Trial, or Appeals Chambers. Strict page limits (typically 25–30 pages per side) and ICC citation standards apply.
🎤 Oral Rounds
Preliminary rounds are held at regional qualifiers (Africa in Arusha/Nairobi, Asia-Pacific in various cities, Europe/Americas at designated hosts). Qualified teams advance to the International Championship Rounds in The Hague, held at the ICC premises. Each oral session typically runs 45–60 minutes per side, with intensive judicial questioning.
| Phase | Details | Timeline |
|---|---|---|
| Registration | Institutional sign-up via Grotius Centre portal | Sept–Oct |
| Case Release | Hypothetical case (charges, procedural posture, evidence) published | October |
| Memorial Submission | Prosecution & Defence memorials (ICC format) | January |
| Regional Rounds | Africa, Asia-Pacific, Europe, Latin America, North America | Feb–April |
| International Finals | ICC Courtrooms, The Hague | May–June |
📊 Evaluation Criteria
Memorials are scored on: legal analysis (40%), application of Rome Statute provisions and ICC jurisprudence (25%), procedural accuracy and format compliance (15%), and writing quality, persuasion and citation discipline (20%). Oral scores emphasise: knowledge of the case and law, responsiveness to bench questions, courtroom presence, time management, and the ability to pivot between prosecution/defence/victims’ perspectives under pressure. Judges award individual speaker scores and team-aggregate scores.
Legal Frameworks & Subject Matter
Mastery of the ICC Moot requires immersion in a dense, interconnected web of treaty law, customary international law, and an ever-expanding body of ICC and ad hoc tribunal jurisprudence. Below is a structured guide to the legal ecosystem you must command.
- Rome Statute of the International Criminal Court (1998) — The foundational treaty. You must know every article intimately, especially Parts 2 (Jurisdiction, Admissibility, Applicable Law), Part 3 (General Principles of Criminal Law), Part 5 (Investigation and Prosecution), Part 6 (The Trial), and Part 8 (Appeal and Revision).
- Elements of Crimes — Adopted under Art. 9, these define the material and mental elements for each crime. Indispensable for charge analysis.
- Rules of Procedure and Evidence (RPE) — Governs every procedural question from disclosure to victim participation.
- Regulations of the Court / Regulations of the Registry — Detailed operational rules.
- ICC Policy Papers — OTP policy on sexual and gender-based crimes, children, case selection, etc.
- Geneva Conventions (1949) & Additional Protocols — Relevant for war crimes charges.
- Convention on the Prevention and Punishment of the Crime of Genocide (1948) — For genocide charges.
- Kampala Amendments (2010) — Activated jurisdiction over the crime of aggression.
The most technically demanding aspect of ICC advocacy is arguing modes of criminal responsibility under Articles 25 and 28:
- Art. 25(3)(a) — Direct perpetration, co-perpetration (control theory per Lubanga), indirect perpetration, indirect co-perpetration.
- Art. 25(3)(b) — Ordering, soliciting, inducing.
- Art. 25(3)(c) — Aiding, abetting, or otherwise assisting.
- Art. 25(3)(d) — Contributing to a group acting with common purpose (the ICC’s version of JCE-adjacent liability).
- Art. 28 — Command/superior responsibility: military commanders (Art. 28(a)) vs. civilian superiors (Art. 28(b)), with different mens rea thresholds.
Understanding the Lubanga “control over the crime” theory, the Katanga indirect co-perpetration standard, the Ntaganda approach to dual status, and the Bemba command responsibility framework (Trial vs. Appeals judgments) is absolutely non-negotiable.
ICC Landmark Decisions
- Prosecutor v. Thomas Lubanga Dyilo — Co-perpetration, child soldiers, control theory.
- Prosecutor v. Germain Katanga — Indirect co-perpetration, recharacterisation of facts (Reg. 55).
- Prosecutor v. Jean-Pierre Bemba Gombo — Command responsibility (Art. 28) Trial and Appeals Chamber split; standard of effective control.
- Prosecutor v. Bosco Ntaganda — Dual status of victims/perpetrators, sexual violence as war crimes within armed groups.
- Prosecutor v. Ahmad Al-Faqi Al Mahdi — Destruction of cultural property, guilty plea, reparations.
- Prosecutor v. Al-Bashir — Head-of-state immunity, cooperation obligations, genocide charges at confirmation stage.
- Situation in Bangladesh/Myanmar — Jurisdictional reach over non-State Parties, deportation as crime against humanity.
- Prosecutor v. Ongwen — Forced marriage, former child soldier as perpetrator, mental disease defence.
ICTY/ICTR Jurisprudence (as persuasive authority)
- Tadić — JCE, armed conflict classification.
- Akayesu — Genocide definition, sexual violence as genocide.
- Blaškić — Command responsibility tests.
- Kunarac — Enslavement and sexual slavery.
Victim Participation Rights
Sexual & Gender-Based Violence
Child Soldiers
Command Responsibility
Immunity & Cooperation
Regulation 55 Recharacterisation
Evidentiary Standards (Art. 69)
Crime of Aggression
Contextual Elements
Mental Element (Art. 30)
Defences (Art. 31)
Reparations (Art. 75)
Ne Bis In Idem
Research Strategy Masterclass
ICC Moot research is fundamentally different from other moots. You are not simply arguing principles of law — you are navigating a specific court’s jurisprudence, procedure, and institutional culture. Here is how elite teams approach research.
🔍 The ICC-Specific Research Hierarchy
Unlike the Jessup or Vis, where broad treatises may suffice, ICC research demands a court-centric methodology:
- ICC Decisions First — Always start with the ICC Legal Tools Database (ltd.icccpi.int). Search by article, keyword, and situation. Read full decisions, not summaries.
- Elements of Crimes & RPE — Cross-reference every charge with the applicable Elements.
- OTP Policy Papers & Strategy Documents — These reveal the prosecution’s institutional approach.
- ICTY/ICTR Case Law — Persuasive, not binding, but ICC chambers frequently cite ad hoc tribunal jurisprudence.
- SCSL, ECCC, STL, KSC Jurisprudence — Hybrid tribunals provide additional comparative material.
- Scholarly Commentary — Triffterer/Ambos Commentary on the Rome Statute, Schabas Commentary, Cryer et al.
- ILC Draft Articles — Especially for state responsibility, immunity, and aggression issues.
📚 Essential Databases
- ICC Legal Tools Database (legal-tools.org)
- ICC Court Records (icccpi.int/court-record)
- ICTY/ICTR Case Law Databases (ucr.irmct.org)
- HUDOC (for ECHR cross-references)
- Westlaw / LexisNexis International
- Oxford Reports on International Law (ORIL)
- Cambridge Core — International Criminal Law journals
- Brill — Leiden Journal of International Law
📖 Key Journals
- Journal of International Criminal Justice (JICJ)
- International Criminal Law Review (ICLR)
- Criminal Law Forum
- Leiden Journal of International Law
- American Journal of International Law (ICL articles)
- The Law and Practice of International Courts and Tribunals
- International Review of the Red Cross (for IHL-related war crimes)
Memorial / Written Submissions Guide
ICC memorials must replicate the format and rigour of actual filings before the Court’s chambers. This is a criminal procedure simulation — your written work must read like a Prosecution or Defence brief filed by seasoned international criminal lawyers.
Prosecution Memorial
- Cover Page — ICC formatting (Situation in [Country], Prosecutor v. [Accused], ICC-XX/XX-XX/XX)
- Procedural History — Concise recitation of procedural steps taken.
- Statement of Facts — Methodical, fact-indexed narrative establishing the evidential basis.
- Issues Presented — Framed as legal questions the Chamber must answer.
- Submissions on Jurisdiction and Admissibility — Complementarity analysis, gravity threshold, Art. 17 tests.
- Submissions on Substantive Charges — Charge-by-charge analysis, mapping facts to elements, addressing contextual elements, establishing mens rea under Art. 30.
- Submissions on Modes of Liability — Detailed argument under Art. 25 or Art. 28 with case-specific evidence.
- Prayer for Relief — Specific requests to the Chamber.
Defence Memorial
- Challenges to jurisdiction (territorial, temporal, personal, subject-matter).
- Admissibility objections (complementarity, ne bis in idem, gravity).
- Factual disputes — attack the prosecution’s narrative, highlight inconsistencies.
- Element-by-element rebuttal of each charge.
- Challenge to the mode of liability — argue the wrong standard is applied or the facts don’t meet the threshold.
- Defences under Art. 31 (mental disease, intoxication, self-defence, duress).
- Rights of the accused under Art. 67.
ICC memorials must use the Court’s own citation conventions:
- Case citations: Prosecutor v. [Name], [Chamber], [Decision Title], ICC-XX/XX-XX/XX, [Date], para. XX.
- Rome Statute articles cited as: “Art. 25(3)(a) of the Statute”.
- Elements of Crimes cited by specific crime’s element number.
- RPE Rules cited as: “Rule 68 of the RPE”.
- Footnotes (not endnotes), consecutively numbered.
- Paragraph numbering throughout the body of submissions.
Failure to follow ICC-specific formatting is one of the easiest ways to lose memorial points. Study real ICC filings on the Court Records database to internalise the format.
- Ignoring contextual elements — Crimes against humanity require a widespread/systematic attack on a civilian population; war crimes require a nexus to armed conflict. Failing to argue these threshold elements is fatal.
- Treating modes of liability as an afterthought — This is often the most contested issue. Devote substantial space to it.
- Using ICTY JCE doctrine at the ICC — The ICC rejected JCE; don’t import it carelessly. Art. 25(3)(d) is not the same as JCE III.
- Neglecting victim participation arguments — Even if the competition doesn’t require a separate Victims’ memorial, integrating victims’ procedural rights strengthens your analysis.
- Over-relying on secondary sources — Judges want to see Rome Statute text, Elements of Crimes, and ICC case law as primary authorities.
Oral Advocacy Masterclass
ICC oral advocacy demands criminal courtroom precision. Unlike the diplomatic register of the Jessup or the commercial pragmatism of the Vis, ICC advocacy requires the surgical clarity of a criminal trial lawyer combined with the gravitas of international court proceedings.
⚖️ Prosecution Advocacy
The Prosecution must project authority, moral gravity, and meticulous factual command. Open with a clear theory of the case: “The Prosecution submits that the accused, through his role as [position], exercised control over the crime of [charge] by [specific conduct].” Every factual assertion must be tied to evidence in the case file. Anticipate defence challenges to each element and have rebuttals ready. Maintain a tone that is firm but never emotional — the ICC OTP is an institution, not a victim advocate. Use precise language: “The evidence establishes beyond reasonable doubt that…” not “we believe” or “it seems.”
🛡️ Defence Advocacy
Defence counsel must master the art of strategic dismantlement. Attack the prosecution’s case at its weakest link — whether that is jurisdictional defects, failure to satisfy the elements of a particular crime, or inability to establish the mens rea threshold under Art. 30. Use “even if” argumentation layers: “Even if the Chamber accepts the Prosecution’s factual narrative, the conduct does not satisfy the chapeau requirements of Article 7…” Never concede more than necessary. Invoke rights of the accused (Art. 67) with confidence. The defence tone should convey principled rigour, not desperation.
🎯 Handling the Bench — ICC Judging Dynamics
ICC Moot judges are often real ICC judges, legal officers, or experienced international criminal practitioners. They ask questions that mirror actual courtroom dynamics:
- “Counsel, how do you reconcile your argument with the Appeals Chamber’s holding in Bemba?” — You must know the jurisprudential landscape cold.
- “What is the evidentiary standard at this procedural stage?” — Distinguish between confirmation hearings (substantial grounds to believe), trial (beyond reasonable doubt), and arrest warrants (reasonable grounds to believe).
- “If the Chamber rejects your primary mode of liability, what is your alternative?” — Always have layered modes of liability ready.
- “How does this case differ from the Katanga recharacterisation?” — Demonstrate nuanced understanding of procedural history.
Golden Rule: Never say “I don’t know” or “That’s outside the scope of our memorial.” Instead: “The Chamber’s question raises a critical issue. The Prosecution/Defence submits that…”
With 20–30 minutes per speaker (varies by round), structure is essential:
- Opening (2 min) — Roadmap, theory of the case, key prayer.
- Jurisdictional/Admissibility Arguments (5–7 min) — If applicable.
- Substantive Arguments on Charges (10–12 min) — Element-by-element analysis.
- Modes of Liability (5–7 min) — Often the most questioned segment.
- Conclusion (1–2 min) — Summarise and re-state the prayer.
Reserve 20–30% of your time for questions. If a judge intervenes, stop immediately, answer the question directly, then transition back.
In some rounds, teams must argue as Victims’ Participants — a role unique to the ICC system. This requires:
- Understanding victim participation under Art. 68(3) and Rules 85–99 of the RPE.
- Articulating how victims’ personal interests are affected at the specific procedural stage.
- Balancing support for the prosecution’s case with independent advocacy for victims’ rights (e.g., reparations, participation in proceedings, protection measures).
- Tone must be empathetic yet legally rigorous — you are not an NGO advocate but a legal representative before a criminal court.
Advanced Winning Strategies
🧠 Charge Architecture Strategy
Elite teams approach charges as an architectural problem. On prosecution: build overlapping charges that create redundancy (if one charge fails, another covers the same conduct). On defence: identify charge fragility points — the weakest element in the charge structure — and concentrate firepower there. For example, if the prosecution charges the accused with “other inhumane acts” as a crime against humanity, challenge whether the act reaches the threshold of gravity comparable to the other enumerated acts.
🔄 Procedural Stage Awareness
The procedural posture of the hypothetical case dramatically shapes your arguments. A confirmation of charges hearing applies a lower evidentiary standard than a trial. An interlocutory appeal requires you to argue within the Art. 82 appellable-issue framework. A reparations proceeding invokes Art. 75 principles. Many teams lose points by applying trial-stage reasoning to a pre-trial procedural posture. Always adapt.
📐 Mode of Liability Layering
Top prosecution teams present primary and alternative modes of liability: “The accused is liable as a co-perpetrator under Art. 25(3)(a); alternatively, as an indirect perpetrator; in the further alternative, under command responsibility per Art. 28(a).” This mirrors real ICC prosecutorial strategy and demonstrates sophisticated legal reasoning. Defence teams must be prepared to dismantle each layer independently.
🎭 The Complementarity Weapon
Defence teams should always consider admissibility challenges under Art. 17. If the facts suggest that domestic proceedings were initiated, argue that the case is inadmissible. Prosecution must counter with the inability or unwillingness prongs, citing ICC guidance on sham proceedings, collapsed judicial systems, or state shielding. This is a high-impact argument that demonstrates deep procedural knowledge.
Preparation Roadmap
Months 1–2: Foundation Phase
Read the Rome Statute cover to cover. Study the Elements of Crimes. Read Cryer, Friman, Robinson & Wilmshurst, An Introduction to International Criminal Law and Procedure. Familiarise yourself with 3–4 landmark ICC cases (Lubanga, Katanga, Bemba, Ntaganda). Understand the Court’s institutional structure, chambers, and procedure.
Month 3: Case Immersion
When the case is released: read it 5+ times. Identify every legal issue. Map facts to Rome Statute articles. Chart the prosecution’s strongest and weakest charges. Begin research on all relevant ICC jurisprudence for each issue.
Months 3–4: Memorial Drafting
Draft outlines for Prosecution and Defence memorials. Assign charge-specific research to team members. Begin writing section by section. Hold internal moot sessions where team members challenge each other’s legal positions. Iteratively refine arguments.
Month 5: Memorial Finalisation
Complete drafts. Intensive editing for legal precision, citation accuracy, and persuasive force. Faculty review. Format compliance check against ICC standards. Proofread for procedural terminology accuracy.
Months 5–6: Oral Preparation
Conduct 3–4 practice moots per week. Simulate realistic bench questioning. Practice arguing all three roles (Prosecution, Defence, Victims). Record and review performances. Invite external practitioners to serve as practice judges. Master time management.
Month 6–7: Competition Phase
Regional rounds preparation: adjust arguments based on practice feedback. Post-regional: refine for international rounds. If advancing to The Hague: study the courtroom layout, adapt to the ICC’s physical environment, and prepare for the heightened intensity of judging by real ICC personnel.
Recommended Resources
📕 Essential Books
- Triffterer & Ambos (eds.), The Rome Statute of the ICC: A Commentary (3rd ed.)
- Schabas, The International Criminal Court: A Commentary on the Rome Statute
- Cryer, Friman, Robinson & Wilmshurst, An Introduction to International Criminal Law and Procedure
- Cassese, Gaeta et al., Cassese’s International Criminal Law (4th ed.)
- Werle & Jessberger, Principles of International Criminal Law
- Bantekas & Nash, International Criminal Law
🌐 Online Resources
- ICC Legal Tools Database — legal-tools.org
- ICC Official Website — icc-cpi.int
- ICC Case Law Database of the Digest
- IRMCT Unified Court Records — ucr.irmct.org
- Wayamo Foundation ICL Resources
- International Justice Monitor (ijmonitor.org)
- Opinio Juris blog (ICL coverage)
- IntLawGrrls / EJIL:Talk! (ICL articles)
- Grotius Centre Resources — universiteitleiden.nl
🎧 Podcasts & Lectures
- ICC YouTube Channel — courtroom proceedings and lectures
- Leiden University MOOC: International Criminal Law (Coursera)
- Talking International Humanitarian Law (ICRC podcast)
- Just Security Podcast
- Hague Talks
📄 Key Policy Documents
- OTP Policy Paper on Sexual and Gender-Based Crimes (2014)
- OTP Policy on Children (2016)
- OTP Policy on Case Selection and Prioritisation (2016)
- OTP Strategic Plan 2019–2021 and subsequent plans
- ASP Resolutions on Cooperation
Career Impact
🏢 Where ICC Mooters Go
Former ICC Moot participants populate every tier of the international criminal justice system. Career pathways include: ICC Internships (Office of the Prosecutor, Chambers, Registry, Defence), positions at the International Residual Mechanism for Criminal Tribunals (IRMCT), the Kosovo Specialist Chambers, the Special Tribunal for Lebanon, and the African Court on Human and Peoples’ Rights. Many go on to work at human rights organisations like Human Rights Watch, Amnesty International, FIDH, or at dedicated ICL firms.
🎓 Academic & LLM Pathways
ICC Moot experience is a powerful differentiator for LLM applications in international criminal law at Leiden University, University of Amsterdam, SOAS, Cambridge, Columbia, NYU, Geneva, and Galway. Many programmes explicitly value moot court participation in admissions. The research skills developed — particularly deep familiarity with ICC jurisprudence and criminal procedure — translate directly into dissertation topics, research assistant roles, and eventual academic careers in ICL.
Frequently Asked Questions
They test different skill sets. The Jessup covers broad public international law; the ICC Moot is narrower but deeper. You must master criminal law concepts (mens rea, modes of liability, evidentiary standards) in addition to international law. The procedural complexity of the ICC system adds a layer that few other moots demand. Many consider the substantive law more technically challenging, but the memorial page limits are more manageable.
Yes, though a foundational understanding of public international law and criminal law principles is essential. First-year students should ideally serve as researchers in their debut year and transition to oralists in subsequent years. Teams with a mix of experienced and new members perform best.
The competition is conducted in English. Some regional rounds may accommodate French (one of the ICC’s working languages), but the primary working language for memorials and oral advocacy is English.
The competition regularly attracts 100+ teams from across the world, with strong participation from Africa, Europe, Latin America, and Asia-Pacific. Regional round sizes vary — Europe is typically the largest — and around 12–16 teams qualify for the international finals in The Hague.
Study the ICC’s victim participation framework: Art. 68(3) Rome Statute, Rules 85–99 RPE, and key decisions on victim participation (e.g., Situation in the DRC decisions on victim status, Katanga & Ngudjolo participation decisions). Understand the dual nature of the role: you support accountability but your primary duty is to the victims’ personal interests, which may not always perfectly align with the prosecution’s theory.
The Fight Against Impunity Starts Here
The ICC Moot Court Competition is not merely a skills competition — it is a statement of purpose. When you stand in the ICC courtroom and argue that a perpetrator of atrocity crimes must answer for their conduct, or that the rights of the accused must be scrupulously protected, you are participating in the most important legal project of the 21st century: ending impunity for the gravest crimes known to humanity.
The preparation is demanding. The law is complex. The procedural framework is intricate. But the students who master this competition emerge as the next generation of international criminal lawyers, prosecutors, defence counsel, and judges. Approach every hour of preparation with the gravity that the subject matter demands. Your future clients — whether states, accused persons, or victims — deserve nothing less than excellence.
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