India has taken a decisive leap toward building a layered, sovereign air defence shield, as the Defence Acquisition Council (DAC) in 2026 granted clearance for five squadrons of the indigenous Project Kusha alongside five additional squadrons of the S-400 Triumf.
This move is not merely an expansion of air defence inventory—it is the foundation of what can be described as “Mission Sudarshan Chakra”, India’s emerging doctrine of a fully networked, multi-layered air defence ecosystem combining foreign capability with indigenous control.
10 Squadrons of Power: Balancing S-400 Reach with Indigenous Tech
The twin clearance signals a shift from platform-centric procurement to system-of-systems integration. While the S-400 provides a proven long-range interception capability with ranges extending up to 400 km, Project Kusha introduces a critical dimension: software sovereignty.
The S-400 operates on Russian proprietary algorithms, which limits India’s ability to modify its electronic warfare responses independently. In contrast, Project Kusha is being designed with fully indigenous command logic, allowing India to dynamically adapt to evolving threats such as jamming, spoofing, and low-observable targets.
Together, they form a Hybrid Shield:
- S-400: Long-range “global umbrella” with battle-proven interceptors
- Project Kusha: Flexible, upgradeable system tailored for Indian operational needs
This dual-layer approach ensures both capability and control—an essential requirement in modern network-centric warfare.
Feature Comparison: S-400 vs Project Kusha
| Feature | S-400 Triumf | Project Kusha |
|---|---|---|
| Max Range | 400 km (40N6E) | 350–400+ km (M3) |
| Interceptors | 4-layered | 3-tiered (M1, M2, M3) |
| Radar | 92N6E Grave Stone | Indigenous MFCR & BMR |
| Command System | Russian Proprietary | Akashteer / IACCS |
| Status | 5 more Sqns Cleared | 5 Sqns Cleared; M1 Trials Done |
Project Kusha: The M1 Interceptor Enters Production Phase
At the core of Project Kusha is a family of advanced interceptors supported by indigenous radar and command infrastructure. Developed by Defence Research and Development Organisation (DRDO), the system is being industrialized with key contributions from Bharat Electronics Limited (BEL) and Bharat Dynamics Limited (BDL).
The program’s first major milestone is the M1 interceptor, which has completed initial trials and is now moving toward production readiness.
A key technological highlight across the interceptor family is the use of a Dual-Pulse Solid Rocket Motor. Unlike traditional single-pulse systems, this propulsion method allows the missile to conserve energy during mid-flight and unleash a second burst of thrust during the terminal phase—dramatically improving maneuverability and kill probability against agile targets.
The Triple Threat: M1, M2, and M3 Interceptor Capabilities
Project Kusha is structured as a three-tiered interception system, designed to counter threats across multiple ranges and target profiles.
M1 Interceptor (≈150 km)
The M1 serves as the tactical defense layer, optimized for engaging:
- Fighter aircraft
- Cruise missiles
- UAVs
It acts as the first line of protection for critical assets and urban centers.
M2 Interceptor (≈250 km)
The M2 is designed as a stealth hunter, specifically tuned to detect and destroy low radar cross-section (RCS) targets such as:
- Stealth fighters
- Advanced UAVs
Its enhanced seeker and guidance systems make it effective against next-generation threats.
M3 Interceptor (≈350–400+ km)
The M3 represents the strategic layer, capable of targeting high-value airborne assets such as:
- AWACS aircraft
- Aerial refueling tankers
- Stand-off jammers
By neutralizing these force multipliers, the M3 can degrade an adversary’s entire air campaign capability.
Radar Backbone: MFCR and BMR Integration
Project Kusha’s effectiveness is underpinned by a fully indigenous radar ecosystem, including:
- Multi-Function Control Radar (MFCR)
- Battle Management Radar (BMR)
These systems provide 360-degree coverage, simultaneous target tracking, and fire control capabilities. Unlike imported systems, they can be continuously upgraded to counter emerging threats, ensuring long-term relevance.
Akashteer Integration: The AI Command Layer
A defining feature of this new air defence architecture is its integration into the Akashteer network.
Akashteer acts as an AI-driven command-and-control system, linking:
- S-400 squadrons
- Project Kusha batteries
- Other air defence assets
This ensures optimal target allocation and engagement sequencing, reducing redundancy and preventing friendly fire. It also enables real-time decision-making in high-intensity conflict scenarios.
Software Sovereignty: Why Project Kusha is the Real Game Changer
The most critical advantage of Project Kusha lies in software sovereignty. In modern warfare, control over algorithms and data links is as important as missile range.
With Kusha:
- India can independently update threat libraries
- Counter new electronic warfare tactics without external dependency
- Integrate seamlessly with indigenous systems like IACCS and Akashteer
This autonomy transforms India’s air defence posture from reactive to adaptive.
Strategic Implications
The combined induction of 5 S-400 and 5 Project Kusha squadrons creates a dense, layered defence grid capable of handling everything from low-flying drones to high-altitude strategic threats.
More importantly, it reflects a shift toward Total Force Integration, where imported and indigenous systems operate as a unified network rather than isolated platforms.
Strengthening India’s Integrated Air Defence Network
The DAC’s 2026 clearance is not just about adding more air defence systems—it is about architecting a sovereign, layered shield for the future.
By combining the proven reach of the S-400 with the adaptability of Project Kusha, India is building a defence ecosystem that is both powerful and independent.
Under the vision of Mission Sudarshan Chakra, this hybrid architecture ensures that India is not only protected against current threats—but is also prepared to evolve against the unknown challenges of tomorrow.
