Hungary and Slovakia have jointly appealed to the European Commission amid a growing dispute over oil transit routes, after supplies through the Druzhba pipeline were disrupted, intensifying tensions between Budapest and Zagreb.

Hungary and Slovakia turned to the European Commission

Hungarian Foreign Minister Péter Szijjártó said the two countries had formally requested Brussels to enforce an EU rule allowing them to purchase Russian crude via maritime routes if pipeline deliveries are blocked. According to him, Ukraine’s president, Volodymyr Zelenskyy, halted shipments to Hungary for “political reasons”, an accusation Kyiv has not accepted.

Szijjártó insisted Hungary’s energy security remains stable, noting the country holds more than three months’ worth of strategic reserves. He added that Hungarian oil and gas company MOL has already ordered alternative supplies transported by sea. The first cargoes are expected to reach a Croatian port in early March before being pumped onward to refineries in Hungary and Slovakia.

We recently reported on how Hungary seeks Croatia’s help to secure Russian oil supplies while putting the blame on Ukraine.

Croatia says their pipeline is to reduce Russian reliance and not to prolong it

However, the issue has triggered a sharp and unusually public exchange with Croatia. Croatian Economy Minister Ante Šušnjar responded with pointed remarks on social media, saying it was “heartwarming” to hear Hungary speak so strongly about EU law and values. His comments were widely interpreted as sarcastic, reflecting longstanding disagreements between Budapest and Brussels on rule-of-law matters, writes HVG.

The Croatian government has stressed that the Adria pipeline, operated by state-linked firm Janaf, is reliable and has sufficient capacity to meet Hungarian and Slovak demand. Officials in Zagreb argue the infrastructure was designed specifically to reduce Central Europe’s dependence on Russian energy rather than facilitate continued imports from Russia, reports 444.

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Hungary and Slovakia were given exemptions when the Russian invasion started

Under EU sanctions, Russian oil purchases remain restricted, though landlocked member states such as Hungary and Slovakia were granted temporary exemptions after the start of Russia’s invasion of Ukraine. Extending those exemptions to maritime deliveries via Croatia would require specific approvals and would likely be subject to strict conditions.

The dispute also carries a political edge. Croatian officials have pointed out that only months ago, Hungarian representatives questioned whether the Adria pipeline could handle sufficient volumes — a claim Zagreb rejected at the time. Now, Croatian leaders say the same infrastructure is being presented by Budapest as an EU obligation.

Featured image: Szijjártó Péter/Facebook