Ukraine struck a Russian oil depot that serves a military airfield in the Russian city of Engels, Ukraine's military said on Wednesday.
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," the Ukrainian military said in a statement via the Telegram messaging app.
Ukraine's presidential adviser Oleksandr Kamyshin said the military used Ukrainian-made long-range capabilities in the attack.
Russian local authorities earlier on Wednesday said the Ukrainian drone attack caused a major fire at an industrial site in the Saratov region.

At least 73 injured after Houthi rebels attack Saudi civilian and energy facilities
Nepal rescue focused on workers trapped in three tunnels
Indonesia reopens Jakarta airport, four others after Anak Krakatau ash clears
Russia hits Kyiv after brief pause for US envoys' visit, killing two
Kenya offers temporary amnesty to undocumented East Africans amid crackdown fears
7 Indonesian airports remain shut due to volcanic ash from Anak Krakatau
Bolivia confirms 9 deaths after military base explosion
Israeli strikes on southern Lebanese town kill 11, state news agency saysÂ
