Belgrade: The question of Serbia Cluster 3 has become the clearest test of how far the European Union will let political conditions govern the pace of enlargement. Cluster 3 covers competitiveness and inclusive growth, and the Commission wants to open its remaining unopened chapters even though member states remain divided on whether Belgrade deserves the reward.
At an exchange of views among EU ambassadors on 8 July 2026, no decision was taken, because the purpose was to establish where each government stands. The chapters in question are Chapter 10 on information society and media, which has no opening benchmarks, and Chapters 16 on taxation and 29 on the customs union, where the Commission has already found that Serbia meets the benchmarks. Opening a cluster requires unanimity, which turns every national reservation into a veto.
Eight governments reportedly oppose the move: Belgium, Bulgaria, Croatia, Estonia, Finland, Lithuania, the Netherlands and Sweden. They point to rule of law, Belgrade’s weak alignment with EU foreign policy and its strategic orientation. Denmark, Latvia and Luxembourg are described as flexible but want more progress, while more than half of governments back the Commission’s merit-based approach. Reporting since the July meeting has described no agreement.
The numbers show why the Serbia Cluster 3 dispute matters beyond procedure. Serbia applied in 2009, became a candidate in March 2012 and opened negotiations in 2014, and 21 chapters are now open, plus one on normalising relations with Kosovo. In Cluster 3, five of eight chapters are open and Chapters 25 and 26 were provisionally closed in 2016 and 2017. A candidate that has waited this long can argue that technical benchmarks should settle the matter, and the Commission’s own findings on taxation and customs support that reading.
The counter-argument to Serbia Cluster 3 is political. Mass protests have continued since November 2024, President Aleksandar Vučić skipped the 2025 EU-Western Balkans summit, and the Commission’s 2025 report flagged slowing reforms and low foreign-policy alignment as the most worrying issues. About €1.5 billion under the Growth Plan could also be frozen over judicial reform and media independence. Capitals that block Serbia Cluster 3 are effectively saying that technical readiness cannot substitute for democratic credibility.
On Serbia Cluster 3, the Commission faces a delicate choice between rewarding measurable progress and preserving leverage. A narrow opening limited to chapters with met benchmarks would keep the merit principle intact while keeping the harder rule-of-law conditions for later stages. Whatever the outcome, Serbia Cluster 3 will shape how the Union’s credibility is read across the Western Balkans in 2026.





