In a small apartment in a high-rise block on Kyiv’s left bank, 50-year-old Natalia struggled to remain composed as she contemplated spending a second New Year’s Eve without her son Artem. “It’s the time when you’re meant to be with your family and this is going to be the second year without him, unless there is a miracle. I’m looking towards the holiday period with fear,” she said. Two women, both called Natalia, who are the mother and sister of two Ukrainian soldiers held by Russia. Photograph: Julia Kochetova Artem, 31, was a member of Ukraine’s Azov battalion and was...