.Ukraine executes some of its own biggest-ever drone strikes on Russia CNNUkraine Strikes Moscow Oil Refinery in Enormous Drone Blast The Exchange JournalUkraine launches extensive drone assault on Russian energy commercial infrastructure The Washington PostRussia Strikes Kharkiv Athletics Core After Moscow Refinery Fire BloombergFirefighters Extinguish Oil Depot Blaze in Southern Russia 2 Weeks After Drone Strike The Moscow Moments.