Vladimir Putin has vowed to continue attacking Ukrainian energy systems in comments at a champagne reception in the Kremlin."There's a lot of noise about our strikes on the energy infrastructure of a neighbouring country.Putin added that global criticism of strikes that have left millions without electricity and water at the start of winter would "not interfere with our combat missions”.He justified the move by accusing Kyiv of blowing up power lines from the Kursk nuclear power plant and not supplying water to Donetsk in eastern Ukraine."Not supplying water to a city of more than a million people is an act of genocide," Putin said."