It reported multiple explosions and a big fire at "Kristal" oil depot, which it said provided fuel to the "Engels-2" military airfield, where Russia's strategic bomber fleet is based. "The strike of the oil depot creates serious logistical problems for the strategic aviation of the Russian occupiers and significantly reduces their ability to strike at peaceful Ukrainian cities and civilian objects,

Ukraine launched an overnight strike deep inside Russia that set fire to an oil depot in the city of Engels that serves an air base for Russian nuclear bomber planes, the Ukrainian military said on Wednesday.

The Russian city of Saratov and nearby Engels, which hosts a major airbase, "were subjected to a massive UAV attack last night," the regional governor said.