Hostile skies can turn into a battlefield within seconds. Ballistic missiles, cruise missiles, fighter aircraft and cheap loitering munitions can arrive in waves, giving air defence systems only moments to detect, identify and intercept incoming threats.&nbsp;The wars in Ukraine and West Asia have demonstrated this challenge. For India, the answer is an increasingly layered air defence architecture designed to protect critical military and civilian infrastructure.&nbsp;At the heart of this shield is the Russian-made S-400 Triumf. Russia has reportedly submitted a proposal worth more than ₹50,000 crore for five additional S-400 squadrons, alongside hundreds of interceptor missiles. The system can engage certain targets at ranges of up to 400 kilometres.&nbsp;But India’s longer-term objective is increasingly indigenous.&nbsp;Air Marshal Anil Chopra (Retd.) believes imported systems can bridge the capability gap while Indian alternatives mature.&nbsp;“While we are making Indian systems and some of the systems take their own time to mature, these are interim,” Chopra said, adding that eventually “S-400 will phase out and we would have had by then many, many new and better Indian systems.”&nbsp;&nbsp;

India is already constructing a multi-tiered network. Indigenous Akash surface-to-air missiles provide one layer, while MRSAM provides another. Ballistic missile defence capabilities add protection against higher-speed threats. The challenge is integration. Expensive long-range interceptors cannot be used against every inexpensive drone. Sensors, command networks and different interceptor systems must therefore work together to select the most appropriate weapon for each threat. This is where Project Kusha could become critical. The indigenous long-range air defence programme is being developed around multiple interceptor types and is intended to give India the ability to engage threats at extended ranges. Chopra believes Kusha could eventually become the backbone of India’s long-range architecture. “Kusha will come in much, much larger numbers in the long term because we have mastered the radar missile technologies as far as ground-based systems is concerned,” he said, adding, “I think we should be able to suffice with S-400 and the Kusha with larger numbers.” India’s strategy is therefore moving beyond individual weapons towards an integrated shield. In the age of saturation attacks, the decisive factor may not be one missile system, but how effectively every layer works together.

The indigenous air defence programme is being developed around multiple interceptor types and is intended to give India the ability to engage threats at extended ranges. In the age of saturation attacks, the decisive factor may not be one missile system but how every layer works together.

Hostile skies can turn into a battlefield within seconds. Ballistic missiles, cruise missiles, fighter aircraft and cheap loitering munitions can arrive in waves, giving air defence systems only moments to detect, identify and intercept incoming threats. The wars in Ukraine and West Asia have demonstrated this challenge. For India, the answer is an increasingly layered air defence architecture designed to protect critical military and civilian infrastructure. At the heart of this shield is the Russian-made S-400 Triumf. Russia has reportedly submitted a proposal worth more than ₹50,000 crore for five additional S-400 squadrons, alongside hundreds of interceptor missiles. The system can engage certain targets at ranges of up to 400 kilometres. But India’s longer-term objective is increasingly indigenous. Air Marshal Anil Chopra (Retd.) believes imported systems can bridge the capability gap while Indian alternatives mature. “While we are making Indian systems and some of the systems take their own time to mature, these are interim,” Chopra said, adding that eventually “S-400 will phase out and we would have had by then many, many new and better Indian systems.”

The indigenous air defence programme is being developed around multiple interceptor types and is intended to give India the ability to engage threats at extended ranges. In the age of saturation attacks, the decisive factor may not be one missile system but how every layer works together.

S-400 to Kusha: India builds multi-layered sky shield

India is strengthening its air defence network with the development of Project Kusha, an indigenous long-range air defence system designed to complement the Russian-made S-400. The new system aims to intercept enemy aircraft, drones, cruise missiles and ballistic missile threats at multiple ranges. Together, the S-400 and Project Kusha could create a layered missile shield capable of protecting critical military and civilian infrastructure. As regional security challenges evolve, India's push for self-reliance in defence technology marks a major step toward building a robust and modern air defence architecture.


From S-400 to Project Kusha: India builds a powerful new missile shield

India is pushing DRDO-made Project Kusha, a new long-range air defence system, to build a strong Indian system that can safeguard the sky at long distances & reduce the country’s dependency on foreign suppliers. The official name of the Project is the Extended Range Air Defence System.

India is pushing DRDO-made Project Kusha, a new long-range air defence system, to build a strong Indian system that can safeguard the sky at long distances &amp; reduce the country’s dependency on foreign suppliers. The official name of the Project is the Extended Range Air Defence System.

Project Kusha: How India’s homegrown shield set to beat S-400 on cost and control

The missile will form a layered air defence shield with the ability to counter a wide spectrum of aerial threats, along with fighter aircraft, cruise missiles, and high-value airborne assets.

The missile will form a layered air defence shield with the ability to counter a wide spectrum of aerial threats, along with fighter aircraft, cruise missiles, and high-value airborne assets.

What is 'Project Kusha' air defence programme? Inside India’s bid to build a homegrown S-400 killer

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S-400 to Kusha: India builds multi-layered sky shield

From S-400 to Project Kusha: India builds a powerful new missile shield

Project Kusha: How India’s homegrown shield set to beat S-400 on cost & control

What is 'Project Kusha'? Inside India’s bid to build a homegrown S-400 killer