Nato member Romania said on Saturday morning Russia may have breached its airspace during attacks on southern Ukraine. The Kremlin has stepped up its attacks in Ukraine’s southern Odsea and Mykolaiv regions - near the border with Romanian - in recent days after exiting a deal allowing the safe passage of grain shipments via the Black Sea. “Following the detection of groups of drones heading towards Ukrainian territory near the Romanian border, residents in the Tulcea and Galati municipalities were alerted,” Romania’s defence ministry said in a statement. “The radar surveillance system ... indicated possible unauthorised entry into national airspace, with a signal detected on a route towards the municipality of Galati.” Earlier, Russian president Vladimir Putin ordered a former Wagner boss to take control of “volunteer units” and rejoin the frontline in Ukraine. Signalling the Kremlin’s intention to continue using the mercenaries following the death of Yevgeny Prigozhin, Putin told Andrei Troshev in a meeting late on Thursday that his task is to “deal with forming volunteer units that could perform various combat tasks, primarily in the zone of the special military operation.” Read More Ukraine ‘hits power substation’ in drone attacks on Russian border regions Putin’s shameless UN charm offensive - with stolen grain from Ukraine Russian figure skater Kamila Valieva's Olympic doping case will resume for two more days in November Ukraine's Zelenskyy taps celebrities for roles as special adviser and charity ambassador