The commander of Russia's Black Sea Fleet has said its defences are being tightened amid a flurry of Ukrainian drone strikes targeting its home base, the Crimean port of Sevastopol.
Vice Admiral Viktor Sokolov told Friday's edition of the military newspaper Krasnaya Zvezda ("Red Star"): "In connection with the threat of attacks by robotic surface and underwater systems, we have increased the technical defences of the fleet's main base and of the ships' anchorages."
