Ukrainian drones struck deep inside Russia in an overnight attack targeting an oil facility serving a military airfield in the city of Engels, nearly 400 miles from the border, Ukraine’s military said Wednesday.

Ukraine 'drones attack oil depot for Putin's air force bomber planes' deep inside Russia - A huge fire exploded at the ‘Kristal’ oil complex in the city of Engels after long-range strikes, said Ukrain

The Ukrainian military said Wednesday that it struck a fuel storage depot deep inside Russia, causing a huge blaze at the facility that supplies an important Russian air base. Russian officials acknowledged a major drone attack in the area,

The attack was the latest effort to inflict pain on Russia even as Kyiv is losing ground on the battlefield at home.