The parameters of its effectiveness have been proven in actual combat, Almaz-Antey Group CEO Yan Novikov steressed MOSCOW, December 4. /TASS/. The Russian-made S-400 surface-to-air missile system has demonstrated exceptional effectiveness in real combat conditions, and no foreign air defense weapon can rival it in its class, Almaz-Antey Group CEO Yan Novikov told TASS. "The parameters of its effectiveness have been proven in actual combat, and no foreign air defense system can rival the S-400