At least four thermal power plants were damaged as Russia again targeted Ukraine with a round of massive airstrikes overnight, the operator said on Saturday. Of the 32 missiles and cruise missiles launched from the air, the Black Sea and the ground, 21 were intercepted, the Ukrainian Air Force said. Several people were injured at the damaged energy facilities, operator DTEK said, adding that workers were trying to repair the damage, the company added. Air raid sirens sounded across the country ahead of the attacks which had mainly targeted power plants, according to the Energy Ministry in Kiev…