"Modern S-400 Triumf, S-300 Favorit air defense systems, Pantsir-S anti-aircraft missile and gun systems are operational in anti-aircraft missile troops of the Russian Air Force. In 2017 only, four anti-aircraft missile regiments were re-equipped with S-400 Triumf. Another three S-400 will enter service of the Russian Aerospace Forces in 2018," Surovikin told reporters.
He added that a total of five anti-aircraft missile regiments equipped with S-400 systems were maintaining air defense of Moscow and Russia’s central industrial district.
The S-400 Triumph is Russia's next-generation mobile surface-to-air missile system and can carry three different types of missiles capable of destroying aerial targets at a short-to-extremely-long range. The weapon is designed to track and destroy various types of aerial targets, from reconnaissance aircraft to ballistic missiles.