Ukrainian forces attacked a Russian ​oil refinery in Yaroslavl, around 700 km (435 miles) from the Ukrainian border, President Volodymyr Zelensky said on Friday, the ​latest ‌in a series of strikes ⁠by Kyiv on oil facilities in Russia. "In particular, overnight, the Defence Forces ‌of Ukraine operated against targets associated with the ⁠Yaroslavl oil refinery – about 700 kilometres from our territory," he said on the Telegram messaging app. Ukraine ​has intensified its attacks in Russia, ‌aiming to disrupt Russia's oil industry and slash revenue that helps Moscow fund the war in Ukraine. Global ‌energy prices have risen during the Iran conflict and sanctions on ​Moscow's oil sales have been eased. Kyiv has also increasingly adopted the tactic of hitting the same facilities several times. The ​Ukrainian defence ministry said on X that ​Ukraine hit 11 Russian oil facilities ​this month as of May 21, including one of Russia's largest refineries ​Kirishi. Virtually all major oil refineries in central Russia have been forced to halt or scale back fuel output following Ukrainian drone attacks in recent days, official ⁠data showed and sources told Reuters this week. "We are bringing ⁠the war ​back home – to Russia – and that's only fair," Zelensky said. Ukrainian drone attack in Luhansk In Ukraine's Russian-controlled Luhansk region, Ukrainian drones struck a college early Friday, killing at least one person and wounding dozens of others, Russian officials said. Luhansk is in east Ukraine, but is almost entirely occupied by Russia, which claims the region as its own. Images released by the region's Russian-installed governor showed what appeared to be a college in the town of Starobilsk, its windows blown out with flames visible in one of them. There was no immediate comment from Ukraine. "Enemy drones attacked the academic building and dormitory of Starobelsk Professional College," the Moscow-installed governor Leonid Pasechnik said in a post on Russia's MAX messenger, using the Russian name for the town. "At the time of the strike, 86 children aged 14 to 18 were there. Thirty-five suffered injuries of varying severity," he added. Rescuers have recovered at least one body from the rubble and are searching for others, Russian state media reported, citing the country's emergencies ministry. Russia's Investigative Committee, which investigates serious crimes, accused the Ukrainian military of firing four drones at the building. "As a result of the attack, the five-storey building collapsed to the second floor," it said. Kremlin spokesman Dmitry Peskov described the attack as a "heinous crime" in comments to reporters. Starobilsk lies about 65 kilometres (40 miles) from the front line in east Ukraine. Russian forces captured the town in 2022, shortly after launching their full-scale offensive. Ukraine, which denies targeting civilians, regularly fires drones at Russian-controlled areas in retaliation for mass Russian strikes on its own people. The United Nations Human Rights Monitoring Mission in Ukraine has recorded more than 60,000 civilian casualties since 2022, almost 90 percent of which were in areas controlled by Ukraine. (FRANCE 24 with AFP and Reuters)