The S-400 Triumf is a state-of-the-art Russian long-range surface-to-air missile (SAM) system, designed to protect a nation’s airspace from a wide variety of aerial threats. Developed by the Russian defense company Almaz-Antey, it is considered one of the most advanced air defense systems in the world. The S-400 can engage aircraft, drones, ballistic missiles, and cruise missiles, with missile variants capable of striking targets up to 400 kilometers away and at altitudes of up to 30 kilometers. Its advanced radar systems can detect, track, and simultaneously engage multiple targets, including those flying at low altitudes or at high speeds, making it extremely effective against saturation attacks.
India is rapidly advancing plans to procure five additional squadrons of the Russian S‑400 Surya air‑defense system. The decision follows the system’s notable performance during Operation Sindoor, where S‑400 units reportedly engaged and neutralized multiple Pakistani aircraft, including a high‑value reconnaissance platform at an unprecedented range—setting a new benchmark for long‑range aerial engagements. Building on this operational success, Indian defense officials have confirmed that the Ministry of Defence is progressing toward formal approval of the Indian Air Force’s acquisition proposal. Once sanctioned, these new squadrons will be strategically deployed across both eastern and western sectors to enhance India’s layered air‑defense posture. The expanded S‑400 footprint aims to strengthen deterrence and bolster national security along key borders.
India’s earlier deal to buy five S‑400 systems from Russia was valued at roughly ₹35,000–₹40,000 crore in total, which works out to roughly ₹8,000–9,000 crore per S‑400 system on average when including missiles, logistics, training, and support. The price is approximate and may be subject to change depending on final negotiations, currency fluctuations, and additional support requirements.