Russia officially submitted a detailed proposal to the Indian Ministry of Defence for five additional S-400 Sudarshan long-range air defense squadrons, estimated at over ₹50,000 crore. Under the initial 2018 contract, four squadrons have been delivered, with the fifth scheduled for November 2026. Deliveries for the new batch are expected to begin three years after signing.

Following the operational success during Operation Sindoor in early 2026, the Defence Acquisition Council (DAC) approved plans in March to procure five more S-400 Sudarshan long-range surface-to-air missile systems. The decision aims to strengthen India’s multi-layered air defense shield along both the western and eastern borders, ensuring total deterrence against enemy aerial incursions.

Defense Ministry Received Russia’s Deal:

The Ministry of Defense received Russia’s formal response to the tender, with the proposed procurement estimated at over ₹50,000 crore. Under the original 2018 agreement for five squadrons, India has received four units, and the final squadron will arrive by November 2026. Once the new contract is signed, Russia will begin delivering the five additional units within three years.

During Operation Sindoor, the S-400 Sudarshan system effectively intercepted hostile drones, surveillance aircraft, and fighter jets, enforcing an aerial denial zone up to 200 kilometers beyond the border. Western Air Command confirmed that an S-400 missile achieved a record engagement by destroying a enemy surveillance aircraft at a distance of 314 kilometers. India is also procuring over 280 additional missiles to replenish stockpiles and support expanding deployments alongside indigenous developments like Project Kusha.