.Ukraine carries out some of its biggest-ever drone assaults on Russia CNNUkraine Attacks Moscow Oil Refinery in Extensive Drone Blast The Commercial JournalUkraine launches massive drone strike on Russian electricity infrastructure The Washington PostRussia Attacks Kharkiv Athletics Midpoint After Moscow Refinery Fire BloombergFirefighters Extinguish Oil Depot Blaze in Southern Russia 2 Weeks After Drone Strike The Moscow Moments.