America's THAAD VS Russian S-400 Air Defence System This video you will see a comparison between two air defence system. one is THAAD and another one is S-400. THADD is American Anti-ballistic missile system S-400 is Russian Aircraft,missile/anti-ballistic missile system. Operational range of THAAD is 200 kilometer Operational range of S-400 is 400 kilometer Detection range of THAAD is 1000 Kilometer Detection range of S-400 is 600 kilometer Flight Altitude of THAAD is 150 kilometer Flight Altit