India’s air defence capability may receive a fresh upgrade. Russian President Vladimir Putin prepares to arrive in New Delhi. Moscow indicates its readiness to offer two to three additional S-400 air defence regiments to the Indian Air Force. The proposal is expected to be a key topic in the high-level discussions during his visit. This will reinforce defence cooperation as a central pillar of India–Russia ties.
Sources said Russia’s defence firm Rostec has already initiated preliminary talks for a new S-400 contract. It has assured New Delhi that future deliveries will strictly adhere to the committed timeline. This adherence is seen as essential after earlier delays caused by the Ukraine conflict. India’s original $5.43-billion deal for five regiments has seen three delivered, while the remaining two are now slated for early to mid-2026. India has made it clear that any additional contract will be contingent on firm delivery guarantees.
India’s Sudarshan Chakra
The S-400 is widely regarded within the IAF as the “Sudarshan Chakra.” It has become a key component of India’s multi-layered air defence grid. It operates along the China and Pakistan fronts. Its performance during Operation Sindoor in May 2025 further cemented its reputation. An S-400 unit from Adampur shot down a Pakistani aircraft 314 km away. The IAF chief confirmed that the system neutralised seven Pakistani aircraft. It also tracked more than 300 airborne targets simultaneously. The system’s rapid deployment time of under five minutes was also highlighted as a major operational advantage.
One major aspect of the new proposal is Russia’s willingness to offer up to 50 percent technology transfer. This applies to both S-400 missiles and support systems. This could allow Indian companies such as BDL to participate in assembly. It would expedite local production of the 48N6 missile approved in October 2025. Additionally, it would indigenise nearly half of the support ecosystem. This approach reduces long-term costs and boosts defence self-reliance.
Negotiations are expected to gain momentum during President Putin’s visit, with both sides aiming to conclude discussions by mid-2026. Deliveries of the new regiments, if finalised, could begin between 2029 and 2030 at an estimated cost of $2–3 billion. The combination of Operation Sindoor’s success and high-level political engagement signals a renewed strategic chapter in India–Russia defence cooperation.
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