Russian forces on Wednesday pounded the easternmost Ukrainian-held city in the Donbas region that is now the focus of the three-month war, threatening to shut off the last main escape route for civilians trapped in the path of their advance.
After failing to seize Ukraine's capital Kyiv or its second city Kharkiv, Russia is trying to take full control of the Donbas, comprised of two eastern provinces Moscow claims on behalf of separatists.
