Thirteen miles from the Russian frontline lies Kramatorsk, a city at first glance eerily empty. The highway into the centre is deserted, with long, thin Ukrainian flags defiantly hanging above the street, held taut by wires. If Russia’s revised goal is to seize Donbas, the last significant city Moscow’s forces will have to take is Kramatorsk, an industrial centre, that is 40 miles west of the...