According to Ukraine’s Foreign Intelligence Service, Russia is reducing the number of active oil wells, while oil refining in the country has already declined by 10% in 2026.

President Volodymyr Zelensky announced this on Telegram, Ukrinform reports.

“The Foreign Intelligence Service of Ukraine has obtained new Russian documents assessing the aggressor state’s losses from the war. Importantly, this is specifically a Russian internal assessment – one they are trying to conceal both from the world and from their own domestic audience. The first major indicator is a reduction in active oil wells. Just a single Russian oil company – and not even the largest one – has already been forced to shut down around 400 wells,” the Ukrainian President said.

He stressed that, given the specifics of Russian oil extraction, these are substantial losses because restarting wells in Russia is far more difficult than in other oil-producing countries.

According to Zelenskyy, the second indicator is a reduction in oil refining by at least 10% within just several months this year.