Hungary has vetoed a €90 billion EU loan package for Ukraine, drawing sharp criticism from fellow member states who say the move breaches the bloc’s principle of sincere cooperation.

The decision by Prime Minister Viktor Orbán comes amid a dispute over oil supplies through the Druzhba pipeline, which Budapest claims Ukraine has halted for political reasons.

EU leaders including Kaja Kallas and António Costa warned that agreements reached unanimously by the 27 member states must be respected.

The veto also blocks a new round of sanctions against Russia, intensifying frustration in Brussels as the war approaches its fourth year, Euro News has reported.

Several countries have urged Hungary to reconsider, while some officials have called for reforms to prevent single states from derailing major EU decisions.