.Ukraine carries out some of its biggest-ever drone attacks on Russia CNNUkraine Attacks Moscow Oil Refinery in Large Drone Torrent The Exchange JournalUkraine launches gigantic drone attack on Russian electricity structure 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.