KYIV (Reuters) -More than a dozen Russian missiles pounded critical infrastructure across Ukraine on Saturday, the Ukrainian air force said, with several regions reporting strikes on energy facilities and power outages. At the same time, Russian occupation authorities in the southern Ukrainian city of Kherson urged civilians to leave immediately citing what they called a tense military situation. The Ukrainian military said it was making gains as its forces moved southward through Kherson region, taking over at least two villages it said Russian troops had abandoned. Ukrainian President Volody…