Bulgaria is investigating the cause of a fire at a weapons storage facility operated by EMCO, including the possibility of sabotage and a link to a previous blaze at another of the company’s facilities in August, the interior minister said. No ‌injuries were reported in the fire, which broke out near the village of Tsareva Livada and lit up the night sky, according to videos broadcast locally. The incident came weeks after an explosion and fire at another EMCO weapons depot in western...