The S-300PMU-2 Favourite (SA-20B Gargoyle) is a highly capable Russian long-range surface-to-air missile system introduced in 1997, designed to engage aircraft, cruise missiles, and ballistic missiles. It features advanced 48N6E2 missiles with a range of up to 200 km, superior ECCM capabilities, and a "shoot-and-scoot" capability. 

Key Features and Capabilities:

• Target Engagement: Can track over 100 targets and engage up to six targets simultaneously with up to 12 missiles.
• Missile Performance: Uses the 48N6E2 missile, featuring thrust vectoring for increased agility against high-speed, maneuvering targets at altitudes from 
  
  
   up to 
  
  
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• System Components: Comprised of the 83M6E2 command post, 90Zh6E2 air defense missile complexes, and 48N6E2 missiles.
• Detection Range: The 64N6E2 (Big Bird) radar provides early warning at extended ranges, while the 30N6E2 (Flap Lid) engagement radar guides the missiles.
• Mobility: High off-road mobility and 5-minute deployment time to improve survivability. 

Operational Context:
The S-300PMU-2 is considered one of the most advanced iterations of the S-300P family and is used for defending vital administrative, industrial, and military assets. It has been exported to countries including Iran and is utilized for its strong anti-ballistic missile (ABM) capabilities.