.Ukraine performs some of its biggest-ever drone assaults on Russia CNNUkraine Strikes Moscow Oil Refinery in Substantial Drone Surge The Exchange JournalUkraine launches extensive drone attack on Russian energy facilities The Washington PostRussia Strikes Kharkiv Athletics Center After Moscow Refinery Fire BloombergFirefighters Extinguish Oil Depot Blaze in Southern Russia 2 Weeks After Drone Strike The Moscow Moments.