Ukrainian refugee Mariia Kerashchenko tightly clasped the hands of her two children as she walked them through the courtyard of a seedy Berlin building, up a graffiti-covered stairway, and into a modern, sunlit classroom.
Her 7-year-old son, Myroslav, is one of 40 children who started their first day of school Monday, only weeks after joining the millions flooding into Europe to flee the war in Ukraine.
