Russian firefighters are battling a three-day inferno in the southwest of the country, after a Ukrainian drone attack on an oil storage depot ignited the facility's diesel reserves. On Saturday Rostov Oblast Governor Vasily Golubev said that Russian air defense forces had repelled an attack by a Ukrainian UAV in the town of Proletarsk, located around 150 miles from the Ukrainian border. A day later, however, Golubev said that fallen debris from the UAV had landed on the industrial warehouses at the Proletarsk state reserve fuel facility, igniting a fire which Russian authorities have since struggled to contain. Golubev also...