India’s long-awaited S‑400 air defence deal with Russia is approaching completion, with the final unit expected in 2026. Signed in 2018, the agreement covers five S‑400 Triumf systems, designed to bolster India’s airspace defence. Four systems have already been delivered, highlighting the enduring defence partnership between India and Russia despite geopolitical pressures and potential U.S. sanctions.
What the S‑400 Deal Entails
The contract, valued at US$5.43 billion, procures five of the world’s most advanced long-range air defence systems. The S‑400 is capable of detecting, tracking, and neutralising multiple aerial threats, including fighter jets, UAVs, cruise missiles, and ballistic missiles, at ranges up to 400 km and altitudes up to 30 km. The deal strengthens India’s ability to counter threats across land and maritime borders.
Delivery Progress and Future Plans
By 2025, four of the five S‑400 systems have been delivered and integrated into India’s defence network. The final system is slated for delivery in 2026. Discussions are also underway regarding additional purchases or system upgrades, reflecting India’s aim to maintain a technological edge in air defence capabilities.
Strategic Significance
The S‑400 deployment gives India:
- The ability to create layered air defence shields across sensitive regions
- Enhanced deterrence against potential aerial incursions
- Improved response time and early warning for the Indian Air Force
- Integration potential with other defence platforms to form a multi-tiered network
The deal also demonstrates India’s strategic autonomy in defence procurement, particularly in the face of external pressures such as U.S. sanctions under the CAATSA framework.
