Croatia Montenegro EU membership negotiations face new diplomatic challenges after Zagreb outlined eight demands that Podgorica must address before Croatia supports its accession to the European Union. The conditions cover unresolved wartime issues, property disputes and the ownership of a historic naval training ship.
Zagreb presented its position in a document sent to EU member states and senior European officials, according to Croatian news agency Hina.
Croatian authorities described the demands as achievable through dialogue. They also said Croatia continues to support Montenegro’s European integration.
The document warns that unresolved bilateral disputes could affect Croatia’s support for completing Montenegro’s accession negotiations and ratifying its membership treaty.
What Are Croatia’s Eight Demands?
Six of Croatia’s conditions relate to justice and fundamental rights under Chapter 23 of EU accession negotiations.
The remaining two concern foreign, security and defense policy under Chapter 31.
Croatia has identified the following eight issues:
- Compensation for Morinj detainees: Zagreb wants compensation for Croatian civilians and prisoners of war held at the Morinj detention camp between October 1991 and August 1992.
- Protection of the Morinj memorial: Croatia wants Montenegro to keep the memorial plaque at the former detention camp permanently visible.
- Renaming a swimming pool in Kotor: Zagreb wants the municipal pool renamed because it honors Zoran Gopčević, a former water polo player whom Croatian authorities identify as a former Morinj camp guard.
- Finding missing persons: Croatia seeks Montenegro’s cooperation in determining the fate of 14 Croatian citizens who disappeared during the war in the early 1990s.
- Prosecution of war crimes: Zagreb wants further investigations and prosecutions, including cases involving command responsibility.
- Resolving property disputes: Croatia demands progress on claims involving Croatian families who lost property in Montenegro during the 1990s.
- Returning the Jadran training ship: Croatia claims ownership of the historic naval training vessel, which remains under Montenegrin control.
- Settling border disputes: Zagreb wants further negotiations on the land and maritime boundaries between the two countries.
The Jadran dispute remains one of the most sensitive issues. Croatia argues that the ship belongs to it under agreements governing the division of former Yugoslav assets.
Montenegro has maintained control of the vessel since the breakup of Yugoslavia.
Croatia Montenegro EU Membership: What Happens Next?
Croatia says it wants Montenegro to join the European Union but expects measurable progress on the outstanding issues.
The disputes have remained unresolved despite diplomatic discussions between Zagreb and Podgorica.
Many concern the legacy of the Yugoslav wars and competing interpretations of historical responsibility.
Montenegro has made significant progress in its EU accession negotiations. As of October 12, 2026, the country had provisionally closed 21 of its 33 negotiating chapters.
The European Union requires agreement among member states before a new country can join.
Croatia’s position could therefore complicate Montenegro’s goal of becoming an EU member by 2028.
Zagreb maintains that resolving the disputes would strengthen relations between the neighboring countries and allow it to support the final stages of Montenegro’s membership process.
The Croatia Montenegro EU membership dispute highlights the importance of resolving bilateral disagreements before Montenegro completes its accession process.
