.Ukraine performs some of its biggest-ever drone assaults on Russia CNNUkraine Strikes Moscow Oil Refinery in Large Drone Barrage The Exchange JournalUkraine launches massive drone strike on Russian electricity commercial infrastructure The Washington PostRussia Attacks Kharkiv Sports Center After Moscow Refinery Fire BloombergFirefighters Extinguish Oil Depot Blaze in Southern Russia 2 Weeks After Drone Strike The Moscow Times.