IT WAS the heavily-accented Russian voice that Aiden Aslin heard first. A nasal warble echoing down the corridor of a filthy prison block in Ukraine’s occupied Donetsk region. “Oh my God, please don’t be who I think this is,”he muttered. Aslin, from Nottingham, was still recovering from the torment of a mock execution and being stabbed in the shoulder by a Russian guard. Now he had something else to worry about. A door swung open. In front of him stood a shaven-headed Russian propagandist clutching a camera and a microphone. Just a few days earlier, Aslin had been fighting for...