Hungarian Prime Minister Viktor Orban called on the European Union to pressure Ukraine to re-establish the transit of Russian gas to Europe, and linked the issue to extending sanctions against Moscow.

Hungary wants the European Union to intervene in a gas dispute it has with Ukraine, a potential sign of friction in the bloc’s upcoming discussions over renewing sanctions against Russia.

Hungary has not yet decided whether to support the sanctions rollover due at the end of this month. The EU renews sanctions every six months and requires unanimity among its 27 member countries to do so.

Orban, widely seen as having the warmest relations with the Kremlin in the EU, has broken with the majority of European leaders and vocally opposed such sanctions, arguing they did more to damage Euro