Russia-Ukraine war: List of key events, day 848

Ukraine's energy ministry has said that overnight Russian drones and missiles have attacked the country's energy transmission systems in southern and western Ukraine. Two energy workers have been injured as a result of these attacks on Zaporizhia Oblast. Ukraine has said it was dispatching reinforcements to an embattled strategic hilltop town of Chasiv Yar in the eastern Donetsk region, a vital flashpoint whose capture could accelerate Russian advances deeper in the industrial territory. The Ukrainian military has launched a wave of drones that struck three oil refineries inside southern Russia overnight, a security official said on Friday. Russian regional authorities in the Krasnodar region said four people were injured, including oil refinery workers, as a result of drone strikes.