Ukrainian forces have targeted one of Russia's largest oil refineries, striking the Lukoil facility in Kstovo overnight.
The General Staff confirmed the drone attack on Thursday morning, marking another escalation in the campaign against Moscow's energy infrastructure.
The strike comes as Russia faces a worsening domestic fuel shortage.
Long queues at petrol stations have become common across multiple regions, and prices are rising as supply constraints tighten.
The disruption is spreading beyond localized pockets, affecting a significant portion of the country's consumer base.
This development intensifies an ongoing crisis in the Russian energy sector.