By Natalie Thomas BAKHMUT (Reuters) – Since Sievierodonetsk fell to Russian troops Ukrainian volunteer Eduard Skoryk has been getting more calls to evacuate frail and elderly people from Bakhmut, 70 km away, who fear their city in eastern Ukraine may be next. Among them is Tamara Kanonchenko, 81. She is laid on her sofa by two male volunteers, wrapped in an improvised cloth stretcher and carried down the stairs from her flat to a van waiting outside, where she joins others who will be evacuated by train. Social worker Iryna Navrotska watches and reassures the elderly lady she has brought meals…