Russian oil supplies to Hungary and Slovakia could be suspended for at least five days after a Ukrainian strike on a facility in Russia, Hungarian and Slovakian officials said on Friday, in a widening of the fallout of Russia's war in Ukraine.

On Friday, officials from both countries warned that the attack on the Unecha oil pumping station, a key hub in western Russia, risked halting supplies for at least five days. The Soviet-era pipeline, which runs through Belarus and Ukraine, is a crucial route for Russian oil to reach Central Europe.

Repeated Ukrainian military strikes on infrastructure have underscored Hungary’s heavy dependence on Druzhba. Currently, 58 percent of the country’s oil — about 5.7 million tons annually — arrives via the line to the refineries in Szazhalombatta and Bratislava.