Project Kusha: India’s 400-km ‘Made in India’ missile shield to counter China and Pakistan

India is moving steadily towards fielding a home-grown long-range air defence shield under Project Kusha, an ambitious programme designed to rival the capabilities of Russia’s S-400 Triumf and the United States’ MIM-104 Patriot. Developed by the Defence Research and Development Organisation (DRDO), the extended-range surface-to-air missile (ER-SAM) system is intended to anchor a three-tier defensive architecture capable of engaging aerial threats up to 400 km away.Recent remarks by Defence Secretary Rajesh Kumar Singh that initial trials have shown “some success” suggest the programme has moved beyond conceptual design and entered an advanced development phase. While full operational timelines remain undisclosed, Project Kusha is now widely viewed as a central pillar in India’s push for strategic autonomy in air and missile defence. Project Kusha is an indigenous long-range surface-to-air missile system designed to protect strategic military assets and vital civilian infrastructure from a wide spectrum of aerial threats. It forms part of a broader plan to create a multi-layered air and missile defence network that integrates sensors, command systems and interceptor missiles across ranges and domains.In September 2023, the Defence Acquisition Council granted the Acceptance of Necessity (AoN) for procuring five squadrons of the system for the Indian Air Force (IAF). This formal clearance marked a decisive step towards eventual induction.The system is being developed by DRDO with Bharat Electronics Limited (BEL) as a principal industrial partner responsible for radar systems and overall integration. Crucially, Project Kusha is expected to plug into the IAF’s Integrated Air Command and Control System (IACCS), enabling real-time data fusion from military and civilian radar networks. This integration will allow seamless tracking, threat assessment and coordinated engagements across vast airspace.Project Kusha is structured as a layered defence system comprising at least three interceptor variants:Each interceptor is tailored for different threat envelopes, enabling flexibility in response. The layered structure ensures that even if one layer is saturated or breached, subsequent layers can engage the target, thereby increasing overall kill probability.The interceptors are designed to counter:Briefings and displays at defence expos have indicated interceptor speeds of around Mach 5.5, alongside the use of advanced seekers and kill-vehicle technologies to improve terminal guidance and accuracy.Modern air defence is as much about sensors and integration as it is about missiles. Project Kusha incorporates long-range surveillance radars and fire-control radars capable of tracking multiple targets simultaneously across a wide battlespace.The system will deploy multiple radar variants and dedicated command-and-control nodes. These nodes will synthesise data from ground-based radars, airborne early warning platforms, and potentially space-based assets to generate a comprehensive air picture. This network-centric architecture ensures:Integration with the IAF’s IACCS will enable cross-domain coordination, ensuring that civil aviation radars and military sensors can contribute to a unified situational awareness grid.India’s most advanced long-range air defence asset currently in service is the S-400 Triumf system, procured from Russia under a $5.43 billion deal signed in 2018. Deliveries are ongoing, with the remaining two batteries expected this calendar year.However, reliance on foreign suppliers for strategic systems presents logistical, geopolitical and financial constraints. Questions have also emerged over whether India should pursue additional S-400 batteries or explore next-generation systems such as the S-500 — which Russia has not exported so far.Project Kusha is intended to reduce this dependence by offering:By developing a domestic alternative, India seeks to secure long-term autonomy in a domain critical to national security.Project Kusha is also linked to the broader “Mission Sudarshan Chakra” (MSC), an ambitious plan to establish a comprehensive multi-layered air and missile defence shield across India by 2035.The MSC concept envisions protection for both strategic military assets and major civilian centres. It draws parallels — in concept, not scale — to missile defence initiatives such as the US “Golden Dome” and Israel’s layered air defence architecture.Under this framework, Project Kusha will form the long-range backbone, complemented by:DRDO has already demonstrated elements of an Integrated Air Defence Weapon System (IADWS), signalling incremental progress toward a fully integrated shield.While many technological building blocks have been developed or are under development, the primary challenge lies in large-scale integration. A country of India’s geographical size requires extensive sensor coverage across land, sea, air and space domains.The defence shield must combine:Such an expansive architecture will demand sustained financial commitment. Yet proponents argue that long-term cost savings from indigenous production, along with strategic independence, justify the investment.Project Kusha is India’s attempt to build a long-range, indigenous air defence system comparable to the Russian S-400 Triumf and the American MIM-104 Patriot. While all three are designed to protect critical assets from aircraft and missile threats, their origins, operational philosophies and levels of maturity differ significantly.The S-400 is currently one of the world’s most capable long-range surface-to-air missile systems, with engagement ranges extending up to 400 km depending on the missile variant. Project Kusha’s top-tier M3 interceptor is designed for a similar 350–400 km envelope, aiming to match that reach. The Patriot, particularly in its PAC-3 configuration, focuses more heavily on ballistic missile defence, with shorter engagement ranges but high terminal accuracy.All three systems are designed to intercept fighter aircraft, drones, cruise missiles and certain ballistic missile threats. The S-400 is optimised for multi-target engagement with layered missile options. Patriot has a proven combat track record, particularly in intercepting tactical ballistic missiles. Kusha aims to combine long-range aerial engagement with evolving missile defence capability, tailored to India’s operational environment.A key distinction lies in ownership and flexibility. The S-400 and Patriot are foreign-origin systems, subject to geopolitical constraints, export controls and upgrade dependencies. Project Kusha, developed by India’s defence ecosystem, offers greater control over software, integration and future upgrades. It can be seamlessly integrated into India’s Integrated Air Command and Control System.Initial trial success indicates that Project Kusha is entering a decisive phase. Reports suggest phased testing of the M1, M2 and M3 interceptors over the coming years, with a goal of completing development before the end of the decade and beginning induction around 2030.If timelines hold, Kusha could become the backbone of India’s long-range air defence architecture in the 2030s. More importantly, it would mark a milestone in India’s journey toward self-reliance in high-end strategic defence systems.As aerial threats evolve — from stealth aircraft and hypersonic weapons to swarm drones — the effectiveness of Project Kusha will depend not only on missile performance but on the robustness of the integrated shield it anchors.In that sense, Project Kusha is more than a missile programme. It is a test of India’s capacity to design, integrate and operationalise a sovereign air defence ecosystem comparable to the world’s most advanced systems.