Model UN Background Guide

Committee: International Court of Justice (ICJ)

Topic: Ukraine v. Russian Federation

Conference Year: 2026

1. Topic Background

The case of Ukraine v. Russian Federation brought before the International Court of Justice (ICJ) centers on allegations of violations of international law arising from Russia’s actions in Ukraine since 2014, including the annexation of Crimea and the ongoing conflict in eastern Ukraine. The dispute escalated dramatically following Russia’s full-scale invasion of Ukraine in February 2022, which led to widespread condemnation, sanctions, and calls for accountability under international law.

The case was formally initiated by Ukraine in 2017, when it filed an application with the ICJ accusing Russia of violating the 1948 Convention on the Prevention and Punishment of the Crime of Genocide (Genocide Convention). Ukraine alleges that Russia’s actions, including the claim of “denazification” and purported genocide in the Donbas region, are baseless and constitute a pretext for unlawful aggression and territorial annexation. Russia denies these allegations and has challenged the Court’s jurisdiction.

The ICJ’s involvement is a significant development because it represents one of the few legal forums where a direct state-to-state dispute over breaches of international treaties and principles of sovereignty and territorial integrity is being adjudicated. The case remains highly relevant in 2026 due to ongoing hostilities, unresolved territorial disputes, and broader implications for the enforcement of international law in conflicts involving major powers. The Court’s rulings could set important precedents regarding state responsibility, use of force, and the protection of human rights during armed conflict.

2. Key Actors

• Ukraine: The applicant state, seeking legal recognition of Russia’s violations of the Genocide Convention and other international obligations, and aiming to bolster its claims for territorial integrity and reparations.
• Russian Federation: The respondent state, contesting the Court’s jurisdiction and denying allegations of genocide or unlawful aggression, asserting its actions as lawful self-defense and protection of Russian-speaking populations.
• International Court of Justice (ICJ): The principal judicial organ of the United Nations tasked with adjudicating disputes between states based on international law. The ICJ’s role is to determine jurisdiction and issue binding rulings.
• United Nations (UN) Secretariat and General Assembly: While not parties to the case, the UN has been deeply involved through resolutions condemning aggression and supporting Ukraine’s sovereignty.
• European Union (EU): A key political and economic actor supporting Ukraine through sanctions against Russia, humanitarian aid, and diplomatic backing, while respecting the ICJ process.
• North Atlantic Treaty Organization (NATO): Though not directly involved in the ICJ case, NATO’s support for Ukraine and deterrence posture vis-à-vis Russia influence the broader geopolitical context.
• Organization for Security and Co-operation in Europe (OSCE): Engaged in monitoring ceasefires and facilitating dialogue in eastern Ukraine, contributing to fact-finding relevant to legal claims.

3. Bloc Positions

Western Bloc (EU, United States, Canada, United Kingdom, Australia, Japan)

• Strongly supports Ukraine’s legal claims and sovereignty.
• Views Russia’s actions as violations of international law, including the UN Charter and Genocide Convention.
• Advocates for full accountability through international legal mechanisms, including the ICJ and International Criminal Court (ICC).
• Emphasizes the importance of upholding the principles of territorial integrity and non-aggression.

Russian-aligned Bloc (Russia, Belarus, Syria, North Korea, some Central Asian states)

• Rejects ICJ jurisdiction and denies accusations of genocide or unlawful aggression.
• Frames the conflict as a defensive and humanitarian intervention.
• Criticizes Western involvement and sanctions as politically motivated and unlawful.
• Calls for recognition of self-determination claims by separatist entities in eastern Ukraine.

Non-Aligned and Developing States (India, South Africa, Brazil, Indonesia, many African and Latin American countries)

• Often emphasize respect for sovereignty and peaceful resolution of disputes.
• Tend to call for dialogue and negotiation rather than judicial or punitive measures.
• Some express concern about precedent-setting that may affect their own territorial disputes.
• May criticize sanctions regimes as extrajudicial and harmful to global stability.

Regional Actors (Ukraine’s neighbors such as Poland, Baltic States, Moldova, and Turkey)

• Generally aligned with Western bloc in supporting Ukraine’s legal claims.
• Highlight risks of regional destabilization and precedent for territorial revisionism.
• Advocate for strong enforcement of international law to deter future aggression.

4. Past UN Action

• UN General Assembly Resolution 68/262 (2014): Affirmed the territorial integrity of Ukraine and declared the annexation of Crimea by Russia invalid.
• UN Security Council Resolutions: Several attempts to address the conflict have been vetoed by Russia, limiting direct Security Council action.
• UN General Assembly Resolution ES-11/1 (2022): Condemned the Russian invasion and demanded withdrawal of forces.
• Reports by the UN Human Rights Monitoring Mission in Ukraine: Document violations of international humanitarian law and human rights abuses in the conflict zones.
• ICJ provisional measures order (April 2022): The Court ordered Russia to suspend military operations in Ukraine pending the case’s resolution.

5. Questions a Resolution Should Answer

1. How can the ICJ’s jurisdiction and authority be effectively supported or reinforced in this case to ensure compliance with its rulings?
2. What mechanisms can be established to facilitate the enforcement of ICJ decisions related to state responsibility and reparations?
3. How should the international community address ongoing violations of international humanitarian law and human rights during the conflict?
4. What role can the UN and other international organizations play in supporting peaceful resolution alongside judicial processes?
5. How can the sovereignty and territorial integrity of Ukraine be upheld in accordance with international law?
6. What measures can be taken to prevent similar breaches of the Genocide Convention and the UN Charter in future conflicts?
7. How can the ICJ case contribute to broader accountability efforts, including cooperation with the ICC and other tribunals?

6. Further Reading

• UN Documents: Official case filings, ICJ judgments and orders, General Assembly and Security Council resolutions, and reports by UN human rights bodies provide primary legal and political context. These documents offer authoritative insights into the legal arguments, procedural developments, and international responses.

• Think-Tank Reports: Analyses from institutions such as the International Crisis Group, Chatham House, and the Carnegie Endowment for International Peace offer in-depth examinations of the legal, geopolitical, and humanitarian dimensions of the conflict and the ICJ case. These reports often include policy recommendations and scenario assessments.

• News Outlets: Reputable international news organizations like Reuters, BBC, Al Jazeera, and The New York Times provide ongoing coverage of developments in the case, diplomatic negotiations, and the conflict’s impact on the ground. They help track real-time events and public statements by key actors.

This background guide aims to equip delegates with a nuanced understanding of the Ukraine v. Russian Federation case before the ICJ, highlighting the legal complexities, geopolitical stakes, and the role of international law in addressing one of the most consequential disputes of the early 21st century.