Ukraine's military reportedly struck the Nevinnomyssk Azot plant in Russia's southern Stavropol Krai overnight on May 20, Russian Telegram media channels reported.

Ukraine launched a massive overnight drone assault targeting the Moscow region, hitting a major oil refinery, a strategic fuel hub, and a key electronics technology park.

Ukraine's defence forces struck the Kstovo oil refinery in Russia's Nizhny Novgorod Oblast on 18 May and an oil pumping station in Russia's Yaroslavl Oblast on 19 May.