Following the combat success of the S-400 Triumf during Operation Sindoor, the Russian government has presented a comprehensive proposal to the Indian Ministry of Defence to supply five additional squadrons of the advanced surface-to-air missile system.
Valued at over ₹50,000 crore, this offer is currently under detailed evaluation by Indian authorities.
The Defence Acquisition Council (DAC) had previously granted approval for the procurement of these five extra squadrons in March 2026.
This strategic move was heavily influenced by the system's exceptional performance in May 2025 during Operation Sindoor, where it successfully neutralised various airborne threats from Pakistan.
The induction of these additional units aims to heavily fortify India's multi-layered air defence shield along the sensitive eastern and western borders.
Currently, the Indian Air Force operates four of the five S-400 squadrons ordered under a $5.43 billion (approximately ₹51,838 crore) contract signed in 2018. The final squadron from this initial batch is slated for delivery by November 2026.
The active units, officially designated as 'Sudarshan' in Indian service, are already strategically positioned across the northern and western frontiers.
The S-400 system is highly regarded globally for its advanced panoramic radar capabilities, allowing it to track up to 300 targets and engage 36 threats simultaneously.
It utilises different interceptors, including the long-range 40N6 missile, capable of hitting targets up to 400 km away. Should this new deal be finalised, India’s total S-400 fleet will double to ten squadrons.
The weapon's operational reputation was significantly boosted following its deployment in Operation Sindoor.
According to Air Marshal Jeetendra Mishra, the Chief of the Western Air Command, the S-400 recorded what is believed to be the longest-ever surface-to-air missile interception by shooting down a Pakistani surveillance plane at a distance of 314 km.
The advanced platform was also credited with successfully engaging multiple hostile fighter jets during the conflict.
Under the newly proposed contract, the initial deliveries would commence roughly three years post-signing.
A key highlight of the ongoing discussions is the potential establishment of a local Maintenance, Repair, and Overhaul (MRO) facility to service the complex machinery.
Furthermore, the deal emphasises joint production, offering a technology transfer arrangement that would allow Indian private sector firms to manufacture two of the five squadrons domestically, while the remaining three would be imported directly from Russia.
These new S-400 units are expected to be seamlessly integrated into the nation's broader air defence network, operating alongside India's domestic long-range air defence initiative, Project Kusha.
Developed by the Defence Research and Development Organisation (DRDO), Project Kusha aims to deploy indigenous interceptors in multiple tiers, with its M3 variant capable of neutralising strategic threats at ranges between 350 and 400 km.
In addition to the new squadrons, India is actively looking to purchase over 280 replacement interceptor missiles for the S-400 to rebuild its stockpiles depleted during Operation Sindoor.
The Russian proposal will now undergo rigorous technical evaluation and commercial negotiations before any formal contract can be signed.
