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.

Russia and Ukraine have stepped up attacks on each other's energy infrastructure, hitting Ukrainian domestic heating supplies, Russia's Druzhba pipeline and other facilities, over the past few weeks as US President Donald Trump has pushed for a deal to end the conflict.

Ukraine has struck the Druzhba pipeline’s Unecha pumping station for the second time in a week, halting Russian crude deliveries to Hungary and Slovakia and triggering renewed tensions over Central Europe’s energy security.