More than 40 firefighters were injured while battling a major blaze at an oil storage facility in southern Russia’s Rostov region, officials said Monday, a day after a Ukrainian drone attack in the area. Rostov region Governor Vasily Golubev said the diesel fire ignited early Sunday morning after Russian air defense systems shot down Ukrainian drones in the town of Proletarsk. Ukraine’s military claimed responsibility for the strike, saying that it had targeted the Kavkaz oil and petroleum storage facility. “As of now, 41 firefighters have been hospitalized. Eighteen of them required extended …