Why in News?
Fourth S-400 Squadron became important after India received another Russian-origin S-400 Triumf air defence squadron, strengthening long-range air defence.
Key Facts for Prelims
- S-400 Triumf is a mobile surface-to-air missile system from Russia.
- India calls the system Sudarshan Chakra.
- It can engage aircraft, UAVs and ballistic/cruise missiles.
- It provides layered air defence using missiles of different ranges.
- India signed the S-400 deal with Russia in 2018.
Static Link: Air Defence Systems
- S-400: long-range multi-layered air defence.
- THAAD: US system focused on high-altitude ballistic missile interception.
- Iron Dome: Israeli short-range rocket/artillery interception system.
- Project Kusha: India’s indigenous long-range air defence project.
Quick Revision Table
| System | Exam Meaning |
|---|---|
| S-400 | Russian long-range SAM system |
| THAAD | US ballistic missile defence system |
| Iron Dome | Israeli short-range rocket defence |
| Project Kusha | Indian long-range air defence project |
Trap / Confusing Points
| Confusion | Correct Point |
|---|---|
| S-400 vs Iron Dome | S-400 is long-range; Iron Dome is short-range. |
| SAM vs cruise missile | SAM is interceptor; cruise missile is target/threat. |
Practice MCQs
1. S-400 is from: A. Russia B. Israel C. France D. Japan
Answer: A
2. S-400 is mainly a: A. SAM system B. Tank C. Submarine D. Fighter jet
Answer: A
3. THAAD belongs to: A. USA B. Russia C. India D. Israel
Answer: A
4. Iron Dome is associated with: A. Israel B. Russia C. China D. Brazil
Answer: A
5. Project Kusha is linked to: A. Air defence B. Legal aid C. Farming D. BRICS finance
Answer: A
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S-400, Fourth S-400 Squadron, Sudarshan Chakra, Air Defence, THAAD, Iron Dome, Project Kusha, UPSC Current Affairs, APPSC, TGPSC
