Russia has confirmed that the fourth squadron of the S-400 Triumf air defence system will be delivered to the Indian Air Force by May 2026, with the fifth squadron expected in 2027. This marks an important step in boosting India’s long-range air defence capabilities amid growing tensions in South Asia.
Defence Minister Rajnath Singh highlighted the strong military cooperation between India and Russia, while officials confirmed that the S-400 programme remains a key part of India’s layered air defence strategy. Delays caused by the Russia-Ukraine conflict and Western sanctions had slowed previous deliveries, but the new timeline restores confidence in India’s air defence planning.
The S-400 system was tested in real combat during Operation Sindoor in May 2025, where it successfully intercepted enemy aircraft and drones, demonstrating its operational effectiveness. The programme, valued at around US$5.43 billion, is one of India’s largest defence investments and aims to provide long-range airspace control.
Capabilities and Strategic Role
The S-400 integrates advanced radar systems and mobile launchers, with missiles capable of hitting targets from 40 km to 400 km away and at altitudes up to 30 km. It allows India to intercept multiple aerial threats, including drones, fighters, and cruise missiles. The system is connected to India’s air command network, improving response time and coordination against attacks.
Regional Impact
Deployed along India’s western and northern borders, the S-400 enhances defence against both Pakistan and China. Its presence increases the cost and risk for any adversary attempting to enter Indian airspace, while also contributing to broader regional security in the Indo-Pacific.
Future Plans
India is also exploring Russia’s S-500 system and developing its own Project Kusha, a long-range indigenous air defence system expected to be operational by 2028–2029. These steps show India’s long-term plan to maintain layered, resilient air and missile defence capabilities against advanced threats in the region.
