Russia’s sustained bombardment of Ukraine’s power grid is deepening concerns about the safety of the country’s nuclear facilities after a drone knocked out power for more than three hours to the site of the 1986 Chernobyl nuclear disaster. While both Chernobyl and the Russian-occupied Zaporizhzhia nuclear power plant are not working, they still require a constant power supply to run crucial cooling systems for spent fuel rods in order to avoid a potential nuclear incident. Zaporizhzhia is Europe’s biggest atomic power plant. “Every day of Russia’s war, every strike on our energy facilities, including those connected to nuclear safety, is a global threat,” Mr Zelensky said. Mr Zelensky blamed Russian artillery for cutting the power line to the plant, but Kremlin spokesman Dmitry Peskov said it was Ukrainian shelling.