India has begun a large-scale strengthening of its air defense, centered on Russian S-400 "Triumf" systems, known in the country as "Sudarshan Chakra," IDRW reports. New Delhi's plans include modernizing key elements of the system to counter stealth aircraft and precision-guided weapons.

According to defense sources, India is seeking software updates and hardware improvements for S-400 radars – primarily the 91N6E and 96L6E. The goal is to enhance the ability to detect stealth targets and improve resistance to electronic warfare systems. Simultaneously, India is expanding the scope of S-400 deployment: the Defense Acquisition Council has approved a plan that will eventually double the number of divisions to 20.

A key element of the strategy is the integration of the S-400 into a unified national air defense system alongside Indian Akash-NG, MR-SAM, and Project Kusha complexes. This will allow for the implementation of a 'fire by command' concept: the S-400 will reserve expensive missiles for high-value targets (AWACS aircraft, strategic bombers, ballistic missiles), while transferring less important targets to more economical systems for engagement.

Thus, New Delhi is building a multi-layered "denial dome," where aerial targets will be tracked by multiple radars and engaged by different means depending on the situation.