Russian Defence System S-400

In this video, you may see the Russian Missile System or Defence System S-400. The anti-aircraft version of the missile system, designed to destroy aircraft, cruise, and ballistic missiles, can also be used against ground targets. The S-400 is able to intercept cruise missiles at a range of only about 40 km due to their low-altitude flight paths.
Operational range: 380 km (40N6E missile); 150 km (48N6(E) missile); 200 km ...
Unit cost: 500 - 625 million USD per one system with reserve missiles .
Ground clearance: 485 mm
Manufacturer: Fakel Machine-Building Design Bureau.
It was revealed in 2021 that Rusnsia, the developer of this sophisticated air defense system, had acquired 25 S-400 Triumf anti-aircraft missile systems over four years as part of the national armaments program. The system is an integral part of the country's defense capabilities.
Undoubtedly, the best air defence system in the world is S – 400. Countries like Turkey and India opted to buy this air defence system even after threats of sanctions by the United States.