Viktor Orbán, who was in power until 2026, was the principal architect of the resistance. He repeatedly declared Ukraine was "light years away" from EU membership, said membership was "too much," and used Hungary's veto to block both accession talks and financial aid .
Péter Magyar succeeded Orbán as prime minister. In early June 2026, Magyar signalled a shift, striking a deal with Ukraine that lifted the veto on opening the first cluster . However, Hungary under Magyar nonetheless blocked progress on the remaining clusters on June 23 .
On June 15, 2026, all 27 EU member states unanimously agreed to open Cluster 1 — "Fundamentals" of accession negotiations with Ukraine . This cluster covers core EU values: rule of law, fundamental rights, democratic institutions, public administration reform, and economic criteria . The decision was adopted at the Second Ukraine-EU Intergovernmental Conference in Luxembourg and was described as the "single biggest step" toward Ukraine's EU membership since accession negotiations formally opened in June 2024 .
European Commissioner for Enlargement Marta Kos set a target to open all six negotiating clusters for Ukraine by July 2026 . She confirmed after the June 15 breakthrough that she expected the remaining five clusters to be opened in July .
That deadline is now at risk. Hungary's objection on June 23 to sending the required procedural letter for the remaining clusters has delayed the process, and EU diplomats expressed doubt that all clusters could be opened by July 14 as hoped .
Unanimity is required at every major step of the EU accession process. Every candidate country's journey — opening negotiations, opening each cluster, closing each chapter, and final accession — requires the unanimous consent of all 27 member states . This means any single member state can block progress at any stage. Hungary has used this veto power repeatedly, and the June 23, 2026, block on the letter for remaining clusters is the most recent example .
The coming weeks will test whether Hungary's new government maintains the obstructive stance of its predecessor or allows Ukraine's accession process to move forward. Commissioner Kos has called on member states to act swiftly, but the unity rule remains a formidable barrier.
Viktor Orbán, who was in power until 2026, was the principal architect of the resistance. He repeatedly declared Ukraine was "light years away" from EU membership, said membership was "too much," and used Hungary's veto to block both accession talks and financial aid .
Péter Magyar succeeded Orbán as prime minister. In early June 2026, Magyar signalled a shift, striking a deal with Ukraine that lifted the veto on opening the first cluster . However, Hungary under Magyar nonetheless blocked progress on the remaining clusters on June 23 .
On June 15, 2026, all 27 EU member states unanimously agreed to open Cluster 1 — "Fundamentals" of accession negotiations with Ukraine . This cluster covers core EU values: rule of law, fundamental rights, democratic institutions, public administration reform, and economic criteria . The decision was adopted at the Second Ukraine-EU Intergovernmental Conference in Luxembourg and was described as the "single biggest step" toward Ukraine's EU membership since accession negotiations formally opened in June 2024 .
European Commissioner for Enlargement Marta Kos set a target to open all six negotiating clusters for Ukraine by July 2026 . She confirmed after the June 15 breakthrough that she expected the remaining five clusters to be opened in July .
That deadline is now at risk. Hungary's objection on June 23 to sending the required procedural letter for the remaining clusters has delayed the process, and EU diplomats expressed doubt that all clusters could be opened by July 14 as hoped .
Unanimity is required at every major step of the EU accession process. Every candidate country's journey — opening negotiations, opening each cluster, closing each chapter, and final accession — requires the unanimous consent of all 27 member states . This means any single member state can block progress at any stage. Hungary has used this veto power repeatedly, and the June 23, 2026, block on the letter for remaining clusters is the most recent example .
The coming weeks will test whether Hungary's new government maintains the obstructive stance of its predecessor or allows Ukraine's accession process to move forward. Commissioner Kos has called on member states to act swiftly, but the unity rule remains a formidable barrier.