As Pravda.Ru reported, the S-300V4 is an anti-aircraft missile system which replaced earlier modifications of the S-300V. The range reaches 400km. It may destroy tactical medium-range ballistic missiles.
Russia officially declared about deployment of the S-400 surface-to-air missile system at the Russian base in Latakia after the Turkish Air Forces had downed the Russian Su-24 bomber, which had been participating in the anti-terror operation in Syria.
Russia has deployed two armies and three units of Airborne Forces to its western borders as part of a verification check, Russian Defense Minister Sergei Shoygu said