Kyiv and Moscow remain locked in a brutal battle for Severodonetsk, a city central to the Kremlin’s goal of capturing eastern Ukraine. Russian forces have probably established control over most residential areas in Severodonetsk and conducted assaults against Ukrainian positions in its industrial zone in the past 24 hours, U.S.-based military analysts said. Roughly 800 civilians have reportedly taken refuge in a chemical factory. Russia claims to control 97 percent of Luhansk, the region where the city is located.