From the Battle of Slavyansk to the Minsk Accords, as told by Alexander Zhuchkovsky and “Strelkov.”April 12, 2014, started out as just another typical day for the eastern Ukrainian town of Slavyansk. At 9 a.m., a dark green truck surrounded by several dozen fighters wearing masks drove up to the local police station. The armed strangers took a rope that was attached to the truck and tied it to a metal grid covering one of the police station’s windows. Within seconds, the truck drove off at full speed, ripping the grid completely off.Having eliminated this obstacle, the fighters smashed in...