Key Facts and Data Points
- System Name: S‑400 Triumf, designated ‘Sudarshan’ in Indian service
- Procurement Cost: USD 5.43 billion for five squadrons (deal signed 2018)
- Current Status (2026): 3 squadrons operational; 2 squadrons expected by end‑2026
- Missile Range: 40–400 km (multiple missile types)
- Radar Capability: Tracks up to 300 targets simultaneously; can engage 36 threats at once
- Operational Test: Successfully used in Operation Sindoor to neutralise hostile drones and missiles
- Integration: Linked with DRDO’s Ballistic Missile Defence (BMD) system and the indigenous Project Kusha (Extended Range Air‑Defence)
Background and Context
- The S‑400 is a mobile, long‑range Surface‑to‑Air Missile (SAM) system developed by Russia, regarded as one of the world’s most advanced air‑defence platforms.
- India’s strategic rationale stems from the need to protect critical airspace along its northern and western fronts, where threats from China and Pakistan are most pronounced.
- The procurement faced diplomatic pressure, notably U.S. CAATSA sanctions, but India proceeded citing national security imperatives.
Significance for India / Governance / Policy
- Strategic Deterrence: Provides a credible anti‑access/area‑denial (A2/AD) capability, complicating adversary strike planning.
- Force Multiplication: Seamless integration with indigenous BMD creates a layered defence architecture – from low‑altitude to high‑altitude threats.
- Technology Transfer & Indigenous Development: While the S‑400 is imported, its operation spurs indigenous R&D (e.g., Project Kusha) and aligns with the ‘Make in India’ defence agenda.
- Geopolitical Messaging: Signals India’s resolve to safeguard its airspace, reinforcing its strategic autonomy in defence procurement.
Related Constitutional / Legal Provisions
- Article 253 of the Constitution empowers the Union to enter into treaties and agreements with foreign states – the basis for defence procurement contracts.
- Defence Procurement Procedure (DPP) 2022 governs large‑scale acquisitions, emphasizing strategic partnership and indigenisation.
- Foreign Exchange Management Act (FEMA) regulates the outflow of funds for such foreign contracts.