Ukraine launches 'Carpathian Eight' regional format; Hungary publicly declines

Why it matters

The Carpathian Eight is a Ukraine-initiated grouping designed to position Kyiv as a leader rather than a recipient in regional cooperation with the EU, spanning security, energy, logistics and cross-border projects. Hungary's public refusal, even after Péter Magyar replaced Viktor Orbán as prime minister, signals that friction between Budapest and Kyiv persists and complicates Kyiv's effort to present C8 as a unified bloc. The summit, however, produced concrete deliverables — a new Railway Coalition, World Bank and EBRD financing for Ukrzaliznytsia and a roughly €40 billion investment portfolio — showing the format is aimed at tangible outcomes, not only political signalling. The Naftogaz–MOL memorandum illustrates both the cross-border energy cooperation C8 is meant to unlock and the limits when Hungary's government disavows deals struck by its own state-linked company.

What happened

On 18 September, President Volodymyr Zelensky announced the launch of the "Carpathian Eight" (C8) regional cooperation format at a summit held in Bukovel on 18–19 September, grouping Ukraine with Romania, Serbia, Poland, Slovakia, Czechia, Austria and the EU as a bloc. The stated aim is joint economic, energy, logistics, security and cross-border projects, with cooperation extending to the regional level as well as the country level.

The summit gathered Zelensky, top officials of the Office of the President, nearly the entire Ukrainian government, international partners and business. A final declaration was signed by representatives of Ukraine, Austria, Poland, Romania, Serbia and Slovakia; Hungary was represented only by a deputy embassy official and did not sign.

Deliverables announced at the summit included a new Railway Coalition to support Ukrzaliznytsia, a $100 million World Bank/RELINC grant for second-hand locomotives, a €130 million EBRD package under UZ Energy for energy resilience, and roughly €1 billion in deals ready to sign from an investment portfolio of about 95 projects worth around €40 billion. On 20 September, Naftogaz and Hungary's MOL signed a memorandum on cross-border oil-product storage.

On 21 September, Hungarian Prime Minister Péter Magyar told parliament that Budapest had received the C8 invitation but declined it for "good reasons," which he did not specify. Ukraine's Foreign Minister Andriy Sybiha replied on X that the statements were "baselessly confrontational" and compared them to Orbán-era policy. Magyar rejected the Naftogaz–MOL memorandum and publicly admonished MOL CEO Zsolt Hernádi for negotiating without government consent.

How Ukrainian sources describe it

Ukrainian sources centre the story on the summit's concrete outcomes: the Railway Coalition, the $100 million World Bank/RELINC grant and the €130 million EBRD package for Ukrzaliznytsia, and roughly €1 billion in deals ready to sign from an investment portfolio of around €40 billion. Ukraine is presented as the initiator and organiser of C8, positioning itself as a regional leader rather than a recipient of EU cooperation. Hungary's refusal is framed as a continuation of Viktor Orbán-era obstruction: Andriy Sybiha called Magyar's statements "baselessly confrontational" and said Orbán's "policy of blocking and isolationism continues to flourish." Ukrainian reporting also stresses that, despite the change of government in Budapest, Hungary has not stopped buying Russian energy and continues to raise the issue of ethnic Hungarians in Transcarpathia in the context of Ukraine's EU accession.

Where reporting differs

Sources disagree on the exact dates of the C8 summit: most cite 18–19 September at Bukovel, while others report 18–20 September in Huta and Bukovel, in Ivano-Frankivsk Oblast. Magyar's wording for Hungary's refusal also varies between sources, with some quoting "good reasons" ("хороші причини") and others "respectable reasons" ("поважні причини"). Finally, Zelensky initially listed Hungary among the C8 members in his 18 September announcement, but Hungary publicly confirmed it had declined; the summit's final declaration was signed only by Ukraine, Austria, Poland, Romania, Serbia and Slovakia, leaving Hungary's status contested in early reporting.

Background

In May, Péter Magyar replaced Viktor Orbán as Hungarian prime minister, but Ukrainian sources note Hungary has not stopped buying Russian energy and continues to raise the issue of ethnic Hungarians in Transcarpathia in the context of Ukraine's EU accession. Ukraine already participates in the "Coalition of the Willing" and "Coalition of Capabilities" formats; the Railway Coalition is presented as a third, railway-specific format alongside them. Since the full-scale invasion began, 533 Ukrzaliznytsia locomotives and 75 private industrial locomotives have been damaged, according to Infrastructure Minister Mykola Kalashnyk.