11 May 2025

S-400 Sudarshan Chakra in action: Key facts on India's missile shield


Considered one of the most advanced and potent air defence systems in the world, S-400 Triumf has the capability to protect against almost all sorts of aerial attacks, including drones, missiles, rockets and even fighter jets. The system, intended to act as a shield over a particular area, is a long-range surface-to-air missile system.

Named SA-21 Growler by NATO, and developed by Russia's Almaz Central Design Bureau, S-400 can engage intruding aircraft, unmanned aerial vehicles, cruise missiles, and ballistic missiles, a recent article in US Air Force's Journal for Indo-Pacific Command stated. It has "surfaced as an anti-access/area denial (A2/AD) asset designed to protect military, political, and economic assets from aerial attacks".

Each unit has two batteries, each of which has a command-and-control system, a surveillance radar, an engagement radar and four lunch trucks.

Russia has been developing the S-400 since 1993. Testing began in 1999- 2000 and Russia deployed it in 2007.

According to the Washington-based Centre for Strategic and International Studies think tank, its "mission set and capabilities are roughly comparable to the US Patriot system" but, unlike some Patriot interceptors, "the S-400 does not currently employ hit-to-kill ballistic missile defence technology".

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