A major oil refinery in Russia's Yaroslavl region caught fire following a drone attack, with Ukrainian President Volodymyr Zelenskyy claiming Kyiv had struck two oil-processing facilities deep inside Russian territory as part of its campaign to weaken Moscow's war economy.

Ukraine has significantly expanded its campaign against Russia’s oil infrastructure this year, targeting refineries that supply fuel for both civilian consumption and the Russian…

Ukraine said Thursday that it carried out drone attacks against two major oil refineries in Russia’s Yaroslavl region and the republic of Bashkortostan, while authorities in the…