Editor’s Note: The Kyiv Independent spoke with children under the permission of one of their surviving parents. At the age of 11, Arina Pervunina saw Russian troops killing her father. She and her younger brother were caught behind enemy lines at their grandparents’ house in Kherson Oblast shortly after the full-scale invasion started, while their parents were at home in Odesa. In the early weeks of the invasion, Arina’s father came to rescue his children and the girl’s two cousins from the Russian-occupied part of Kherson Oblast. They were in their car when Russian soldiers began firing at th…