Portuguese 
English 
Spanish 
5 min of reading 
0 comments 
Being able to manufacture the fighter at home and freely modify its electronic brain is a rare offer in the defense market. But New Delhi hesitates: the Russian jet program accumulates delays, doubts about stealth, and the memory of a previous partnership that failed. The decision is still far from being made.
Russia offered India the production of about 40 fifth-generation Su-57 stealth fighters, with extensive technology transfer and the rare access to the aircraft’s source code. The proposal, which would allow India to manufacture and modify the aircraft on its own territory, gains strength amid the arms race in South Asia and the growing military rapprochement between China and Pakistan, India’s historical rival.
The negotiations have been discussed in bilateral meetings and defense sector fairs throughout 2025 and 2026, according to specialized reports and outlets like The Wire. It is important to clarify right away that this is a proposal under negotiation, not a finalized agreement: India has shown caution and has not yet made any definitive decision, evaluating technical and strategic advantages and risks, as we will see throughout this report.
What Russia is offering
Moscow offered licensed production of the Su-57 on Indian soil, at the state-owned manufacturer Hindustan Aeronautics Limited (HAL), with an estimated localization between 40% and 60% of production and, above all, access to the aircraft’s source code, something extremely rare in the international defense market, which would give India autonomy to modify critical systems without relying on the foreign manufacturer.
-
A strong high-pressure center over the Atlantic Ocean will ensure predominantly sunny and stable weather in Southern Brazil between this Wednesday and Saturday, according to MetSul, although moisture coming from the sea may still bring cloudiness and passing showers in the East of Santa Catarina and Paraná.
-
Already authorized in some European countries, the so-called plastic heart adapts to each patient’s physical activities and, according to scientists, could transform the treatment of heart diseases in the coming decades and increase survival chances around the world.
-
A 65,000-kilometer scar hidden at the bottom of the ocean reveals how the Earth continues to slowly open up as scientists observe the gigantic underwater ridge that has been reshaping continents for millions of years.
-
China has even created a degree in rare earths to train specialists in the minerals that power electric cars, turbines, airplanes, and military radars, while the West tries to catch up.
In practice, this access would allow India to integrate its own national missiles and sensors, such as the BrahMos and Astra missiles, into the fighter.
The offer fits into the Indian policy of strengthening the national industry, known as “Make in India,” which seeks to reduce dependence on foreign suppliers.
HAL, it is worth remembering, already has experience in the sector, having assembled more than 220 Su-30MKI fighters of Russian origin under license over the years.
Why the source code is so valuable
This is perhaps the most strategic point of the entire negotiation.
In modern fifth-generation fighters, software is a central part of the aircraft’s capabilities, controlling everything from flight systems to radar and weapons integration, and having access to this code means being able to operate, maintain, and update the aircraft independently, without needing external authorization.
It is precisely at this point that the Russian offer differentiates itself from Western alternatives.
The United States, for example, tends to maintain strict control over the software of its fighters, like the F-35, whose operators generally cannot modify the code or integrate their own weapons without American approval.
By offering the source code, Russia seeks to attract India with the promise of technological sovereignty and to dispel fears of hidden control mechanisms in the equipment.
The context: a race for fighters in South Asia
The Indian Air Force faces a shortage of operational squadrons, with an estimated number around 29 to 31, well below the official target of 42, in addition to operating part of the fleet already considered obsolete, which increases the pressure for modernization in the face of neighbors.
New Delhi’s main concern is Pakistan, which is reportedly in negotiations to acquire about 40 Chinese J-35 stealth fighters, with deliveries expected to start at the end of 2026.
In this regard, China already operates more than 200 fifth-generation J-20 fighters and is expanding its military cooperation with Islamabad.
It is in this geopolitical chessboard, marked by disputes such as the Kashmir region, that the Russian offer seeks space, although this report only describes the scenario without taking sides.
The Indian national fighter and the “intermediate solution”
In parallel, India is betting on the development of its own technology.
The country is developing the Advanced Medium Combat Aircraft, the AMCA, its first national fifth-generation stealth fighter, but the aircraft is only expected to enter operation in the 2030s, which opens a gap that Russia offers to fill with the Su-57 as an “intermediate solution” until the arrival of the Indian model.
For the AMCA project, the Indian Ministry of Defense has already pre-selected three business groups as candidate partners: Tata Advanced Systems, a consortium led by Larsen & Toubro, and a group formed by Bharat Forge, BEML, and Data Patterns.
The issue for New Delhi is balancing the urgency of having fifth-generation fighters with the desire to maintain industrial sovereignty and not divert resources from its national program, a delicate and long-term decision.
The doubts that make India hesitate
Despite being tempting, the Russian offer faces a good dose of distrust.
Among India’s concerns are the technological maturity of the Su-57 program, which has already faced difficulties in developing its definitive engines, and the uncertainties raised by analysts about the aircraft’s real stealth capability, essential characteristics in a fifth-generation fighter.
A problematic history also weighs in: India and Russia previously had a joint project, the FGFA, based on the Su-57 itself, in which India invested about $295 million.
However, between 2017 and 2018, New Delhi abandoned the initiative, citing dissatisfaction with the terms of technology transfer, high costs, and what it classified as technical limitations of the aircraft.
This experience helps explain why, this time, India is evaluating the proposal with such caution, possibly opting for a limited purchase while prioritizing its national fighter.
The Russian offer of the Su-57 with technology transfer and access to the source code is a bold strategic move, placing India before a complex decision amid the fierce race for fifth-generation fighters in Asia.
On one hand, the promise of technological sovereignty and a quick response to regional threats; on the other, technical doubts and the memory of a partnership that didn’t work out.
Whatever the outcome, the case illustrates how military technology has become a central piece in the global geopolitical chess game.
It remains to be seen whether New Delhi will accept the proposal, bet on the national fighter, or seek an intermediate path.
And you, what do you think of this race for fifth-generation fighters in South Asia? Do you believe that access to the source code makes the Russian offer truly advantageous? Leave your comment, respecting different opinions, share your view on the topic, and share the article with those interested in defense, military aviation, and geopolitics.
Be the first to react!