Costa Invites Zelenskyy to EU Summit for High-Stakes Accession Talks

António Costa, the President of the European Council, has invited Ukrainian President Volodymyr Zelenskyy to attend an upcoming summit of EU leaders to discuss Ukraine’s accession to the European Union. The move places Kyiv’s push for membership directly onto the agenda of the bloc's highest political forum. While Ukraine has consistently sought rapid progress toward joining the union, formal accession requires unanimous approval from all 27 member states—a procedure where political consensus is every bit as critical as technical compliance.

For citizens across the bloc, EU enlargement is a issue with long-term consequences for security, the European budget, and internal political governance. Accession—the legal term for the multi-stage process through which a country becomes a full EU member—demands that a candidate country integrate decades of European law and meet strict judicial and economic criteria. Bringing President Zelenskyy directly into the room with heads of state and government shifts the dialogue from technical assessments to high-level political bargaining, where any single national government holds the power to pause or advance the process.

In the institutional machinery of Brussels, the European Council is where the ultimate authority resides when it comes to expanding the club. While the European Commission acts as the examiner—evaluating candidate countries against legislative benchmarks—it is the Council, composed of national leaders, that must repeatedly vote by unanimity to open and close legal chapters. Inviting a candidate state’s leader to a summit is a carefully orchestrated piece of diplomatic signaling. It offers Council President Costa an opportunity to gauge political readiness among member states, while reminding everyone involved that while Brussels officials handle the paperwork, national capitals hold the keys to the door.

Following the invitation, diplomatic groundwork will turn to preparing the summit agenda and assessing where all 27 member states stand on Ukraine's accession timeline. Any formal progression in the membership process will require total consensus among EU leaders during the meeting.