Moscow [Russia], November 25 (ANI/Sputnik): The combat effectiveness of Russia's MiG-31 interceptors will triple after repair and upgrade, representatives of the Sokol aircraft plant reported to the Deputy Defense Minister Aleksey Krivoruchko. On Thursday, Krivoruchko, during a working trip to Nizhny Novgorod, visited the Sokol aircraft plant, where he examined the production facilities of the enterprise, checked the progress of repair and modernization of MiG-31 fighters, and also held a meeting on the implementation of the state defence order. The overhaul makes it possible to achieve practically trouble-free operation of the aircraft in service, the plant's representative said. "And the...