.Ukraine accomplishes one of its own biggest-ever drone strikes on Russia CNNUkraine Strikes Moscow Oil Refinery in Huge Drone Blast The Exchange JournalUkraine dispatches enormous drone attack on Russian energy infrastructure The Washington PostRussia Strikes Kharkiv Sports Center After Moscow Refinery Fire BloombergFirefighters Extinguish Oil Depot Blaze in Southern Russia 2 Weeks After Drone Strike The Moscow Moments.