Russian attacks have destroyed an oil refinery in the central Poltava region and struck “critical infrastructure”, most likely oil facilities, near the key port city of Odesa, local officials said. Kremenchuk, 250km (150 miles) southeast of Kyiv along the Dnipro River, had Ukraine’s only fully functioning oil refinery. Vladyslav Nazarov, an officer of Ukraine’s Southern Operational Command, said on Telegram that there had been a missile attack on “critical infrastructure”. Two columns of thick, black smoke could be seen rising into a grey sky before spreading out over the city.