AMID the rubble of eastern Ukraine lie traces of life before the war: a pair of broken sunglasses, a stuffed pink unicorn, a roll of undeveloped film. In Dokuchaievsk, south of Donetsk, where a rocket recently ripped into an apartment block, a lonely dog, Virma, sits by the rubble, paws shaking. Virma’s owner, like the other 5,000 people killed in Ukraine since last April, will not be back. Despite hopes that the conflict was edging towards resolution, Ukraine’s war has entered its deadliest period since a nominal ceasefire halted a Russian-led advance in September. Dokuchaievsk is just one of many small towns and cities caught up in the latest violence.The ceasefire unravelled when rebel forces renewed their siege of Donetsk airport. President Petro Poroshenko threatened to “hit the rebels in the teeth”; the rebels’ leader, Alexander Zakharchenko, promised to attack Kiev’s troops until he reached “the borders of the former Donetsk region.” But mostly both sides hit civilians, fighting at a distance with heavy artillery. In the nine days to January 21st, at least 262 people were killed in eastern Ukraine, an average of 29 a day. A rocket strike on…