KYIV: A Russian drone attack on Ukraine’s Kharkiv region killed one person and wounded another, its governor said Wednesday.The strikes hit a farm in the village of Borivske, resulting in warehouses and vehicles catching fire, Kharkiv Governor Oleg Synegubov wrote on Telegram.“Unfortunately, one person died and one was injured,” he said.Russian shelling also targeted another farm in the village of Voloska Balakliya, igniting a warehouse but not causing casualties, he added.A Russian attack on the city of Kharkiv’s, Novobavarsky district did not result in injuries, Mayor Igor Terekhov wrote on Telegram.Ukraine’s military, meanwhile, said it hit an oil refinery in Russia’s western Saratov region.It said the refinery is used by Moscow to “provide fuel and lubricants to the Russian military units” fighting against Ukraine.Russian authorities did not immediately confirm the attack.More than three years after Russia’s February 2022 invasion of its neighbour, fighting continues to rage on the ground in Ukraine, with efforts to agree a truce at a standstill.