As Tokyo’s old certainties fray under pressure from China, North Korea and an unpredictable Washington, New Delhi is emerging as the partner Japan didn’t used to need
New Delhi, August 22, 2026: On Thursday, August 20, Defence Minister Rajnath Singh and his Japanese counterpart Shinjiro Koizumi sat down in New Delhi and put their signatures to a Memorandum of Arrangement on Maritime Security Cooperation. It was, on paper, one more bilateral document in a relationship that already produces plenty of them. In substance, it was something more: a framework that pushes India and Japan from joint statements and ceremonial exercises toward the far more consequential business of shared technology, shared shipyards, and shared risk.
The agreement, signed after a ceremonial Guard of Honour for Koizumi at the Manekshaw Centre, formalises cooperation between the Indian Navy and the Japan Maritime Self-Defense Force (JMSDF) across information-sharing, exercises, logistics and most strikingly the exploration of joint warship design and construction. It arrives against a backdrop that has concentrated minds in both capitals: a still-unfolding war around Iran that has shown how quickly American attention can be pulled elsewhere, a North Korea testing missiles at a pace not seen in years, an assertive China, and a Japan running out of young people to put in uniform.
What The Pact Actually Covers
According to the joint statement issued after the meeting, the arrangement is broader than its name suggests.
| Area | What It Covers |
|---|---|
| Information sharing | Maritime Domain Awareness (MDA) data exchange between the Indian Navy and JMSDF |
| Search, rescue & relief | Cooperation on Search and Rescue (SAR) and Humanitarian Assistance and Disaster Relief (HADR) |
| Exercises & visits | Joint naval exercises, reciprocal ship visits, personnel exchanges, closer special-forces contact |
| Logistics | Reciprocal use of ports and maintenance facilities; a ship-repair arrangement under discussion |
| Shipbuilding | Joint exploration of naval ship design and construction, with greater use of Indian shipyards under Make in India |
| Technology transfer | The UNICORN integrated mast system — the first defence equipment transfer project between the two countries |
| Institutional structure | A new working group at Director-General/Joint Secretary level to coordinate implementation |
Both sides also agreed to widen the scope of the army exercise Dharma Guardian and the naval exercise JAIMEX, and to add unmanned systems and short-notice drills to the mix. The most eye-catching line, though, concerns the air force: preparations are under way for Veer Guardian 26, under which Japanese fighter aircraft will visit India for the first time. Analysts note that air force exercises demand a far higher level of technical and logistical coordination than ceremonial exchanges which is precisely why the milestone matters.
A Separate Meeting, A Bigger Invitation: Modi Calls In the Start-Ups
Later the same Thursday, once his talks with Rajnath Singh had wrapped up, Koizumi paid a courtesy call on Prime Minister Narendra Modi. According to a statement issued by the Prime Minister’s Office, Modi recalled his detailed discussions with Takaichi from July and welcomed the steady momentum the two countries had built in defence collaboration since. He set out his vision for further strengthening the Special Strategic and Global Partnership, and underlined how central India-Japan defence and security cooperation had become to peace, stability and prosperity in the Indo-Pacific “and beyond.” In a social media post after the meeting, Modi described the conversation as an excellent one on deepening defence and security ties, calling the partnership “an important anchor” for the region.
The line with the most practical consequence, though, was aimed squarely at industry. Modi told Koizumi that the opportunity for Japanese companies extended beyond India’s established public-sector defence giants to Indian start-ups as well, specifically for co-development and co-production under Make in India. Koizumi, for his part, said he intended to put his full effort into converting the discussions into concrete outcomes.
Analysts see the start-up mention as more than a courtesy line. Folding smaller, faster-moving technology firms into the ecosystem alongside the large state-owned shipyards is typically how sensors, software, drones and electronic-warfare systems get developed at a pace large public-sector companies alone often struggle to match.
The Backstory: A “Younger Sister” and a ¥10 Trillion Bet
This agreement did not emerge from nowhere. Its foundations were laid in July, when Japanese Prime Minister Sanae Takaichi travelled to India from July 1 to 3 for the 16th India-Japan Annual Summit her first visit to India since taking office, and the first since the two countries’ “Joint Vision for the Next Decade” was unveiled during Modi’s own Tokyo visit the previous August.
At a joint press appearance following the talks, Modi greeted Takaichi as “meri chhoti behen” my younger sister praising her as Japan’s first woman prime minister and a “visionary and popular leader.” Takaichi, who hails from Nara Prefecture, reciprocated by describing the relationship as one between “brother and sister.” Japan’s ambassador to India, Keiichi Ono, would later call the exchange a genuine marker of trust between the two leaderships, not merely stagecraft.
Behind the warmth, the July summit did real work. A joint declaration on economic security identified five priority areas semiconductors and critical minerals, clean energy including ammonia, ICT infrastructure and submarine cables, and pharmaceuticals alongside a fresh Japanese target of ¥10 trillion (roughly $63 billion) in private investment into India. On the defence side, the two governments reached an in-principle agreement on the UNICORN system later described as the first India-Japan defence co-development pact. Notably, speculation that Japan might offer co-production of its Mogami-class frigates did not feature on that summit’s official agenda; Foreign Secretary Vikram Misri told reporters at the time that the subject simply hadn’t come up, while leaving the door open for future discussion.
Why Now: Four Pressures Reshaping Tokyo’s Calculus
Several converging pressures explain why Japan has moved this fast, and why India has found itself a more attractive partner than it once was.
America’s shifting bandwidth. Since late February, a war centred on Iran involving American and Israeli strikes and a crisis over the Strait of Hormuz has consumed enormous US military and diplomatic attention, and the IEA has called the resulting disruption one of the largest in the history of the global oil market. For Tokyo, the episode has been a live demonstration of how fast Washington’s strategic focus can move away from the Indo-Pacific when a crisis erupts elsewhere.
North Korea’s missile tempo. Pyongyang has tested missiles repeatedly through 2026 by South Korean counts, its eleventh such launch of the year came in mid-August alone often timed to coincide with Japanese commemorations or US-South Korean drills. When Japan test-fired a US-made Tomahawk cruise missile in early August, Kim Yo Jong warned of unspecified “additional military options” in response, part of a pattern of statements criticising Japan’s defence build-up.
An unresolved history with China, and a fresh flashpoint over Taiwan. Japan’s wartime record in China remains a live undercurrent in the relationship, and Beijing’s expanding military activity in the East China Sea keeps Tokyo on edge. That tension sharpened further after Prime Minister Takaichi suggested a Chinese move on Taiwan could threaten Japan’s own survival a remark that drew a sharp diplomatic response from Beijing and underlined how contested the regional temperature has become.
A demographic wall. Japan’s 2025 census recorded around 123 million residents down three million from 2020, the steepest five-year decline on record with the fertility rate falling to a record-low 1.14 and deaths outnumbering births by more than 900,000. The knock-on effect on the Self-Defense Forces’ recruiting pool is severe enough that Japan’s 2026 defence white paper leans heavily on drones and AI-enabled systems to compensate for people it simply does not have.
Put together, these pressures point to a single conclusion Tokyo has been slow to reach and quick to act on once it did: single-source dependence on the United States for security is no longer a comfortable bet, and countries with scale India chief among them look considerably more useful than they did five years ago.
Complementary Strengths: What Each Side Brings
| Japan Brings | India Brings |
|---|---|
| Precision engineering and stealth design | A very large pool of skilled engineers and labour |
| Advanced sensors, electronics, communications | A large domestic manufacturing base |
| Decades of shipbuilding experience (Mogami-class and successors) | An expanding defence-industrial ecosystem and shipyard capacity |
| Robotics, satellite-enabled surveillance, advanced materials | Lower production costs, large domestic market |
| Capital and R&D depth | Institutional push via Make in India / Atmanirbhar Bharat |
As one recent analysis in Asia Times put it, none of this is about Japan choosing India over the United States. Tokyo remains deeply enmeshed with Washington on quantum computing, artificial intelligence and advanced materials. What is changing is Japan’s tolerance for having only one supplier of last resort and its willingness, after decades of restraint, to treat India as a genuine industrial partner rather than simply an export customer.
India’s Toolbox: Are the Shipyards Actually Ready?
It is one thing to talk about combining Japanese technology with Indian production capacity; it is another to have yards that can actually do it. On that count, the picture looks encouraging. India’s five principal defence shipyards Mazagon Dock Shipbuilders (Mumbai), Cochin Shipyard (Kochi), Garden Reach Shipbuilders & Engineers or GRSE (Kolkata), Goa Shipyard (Goa), and Hindustan Shipyard (Visakhapatnam) are, by most industry accounts, in the middle of an unprecedented expansion.
| Shipyard | Location | Current Strength |
|---|---|---|
| Mazagon Dock Shipbuilders (MDL) | Mumbai | India’s leading yard for submarines and destroyers; has delivered 31 warships and 8 submarines to date; now expanding into commercial and export shipbuilding |
| Cochin Shipyard (CSL) | Kochi | India’s largest PSU shipyard by dry-dock capacity; built INS Vikrant, India’s first indigenously built aircraft carrier; diversifying into destroyers, LPDs and LNG carriers |
| Garden Reach Shipbuilders & Engineers (GRSE) | Kolkata | Fastest-growing PSU shipyard; builds frigates, corvettes and next-generation offshore patrol vessels; already exporting vessels to Germany |
| Goa Shipyard (GSL) | Goa | Elevated to Schedule ‘A’ PSU status in early 2026; specialises in offshore patrol vessels and missile craft; exports to friendly nations in Asia and Africa |
| Hindustan Shipyard (HSL) | Visakhapatnam | Focused on submarines and frigates; expanding capacity with fresh Ministry of Defence capital backing |
The government’s own numbers support the optimism. New Delhi has earmarked roughly ₹1.52 lakh crore over five years for submarines, destroyers, frigates and coast guard vessels, on top of a separate ₹44,700-crore package of shipbuilding financial-assistance schemes announced by the shipping ministry. One brokerage assessment projects the Navy entering a commissioning “super-cycle” a new warship roughly every 40-42 days from 2026 onward as India works toward its stated ambition of climbing from the world’s 16th-largest shipbuilding nation into the global top five.
Set against that backdrop, the India-Japan partnership looks less like a symbolic gesture and more like a plausible industrial fit: Japanese design, sensors and precision engineering meeting five Indian yards that are already scaling up production capacity on their own, independent of anything Tokyo brings to the table.
UNICORN: A Small Project Carrying a Large Message
The clearest evidence of where this is headed is UNICORN a shipborne integrated mast, originally developed by Japan’s NEC, that folds communications, surveillance and electronic-warfare functions into a single low-signature structure, cutting a warship’s radar profile in the process. Defence commentators have taken to calling this kind of equipment “ninja tech.”
What makes UNICORN significant is not the mast itself but the model behind it: Japan supplies the design and core technology, while India’s state-owned Bharat Electronics Limited (BEL) handles manufacturing and integration on Indian soil. Officials on both sides have described it as the first formal defence equipment transfer project between the two countries a pilot, in effect, meant to test whether India and Japan can actually work together on hardware before either side commits to something bigger, such as drones, sensors or electronic-warfare systems.
Will Warships Actually Be Built Together ?
Reports in April suggested Japan had pitched India co-production of its upgraded Mogami-class frigates — known as the New FFM under Make in India. The ships, which operate with a crew of roughly 90 thanks to heavy automation and cost around $500 million apiece, would represent one of the most significant defence-technology transfers Japan has ever offered a non-treaty partner. Tokyo struck a comparable deal with Australia around the same time.
It is worth being precise about where things actually stand, however. The Mogami proposal was not on the official agenda of July’s summit, as Foreign Secretary Misri confirmed at the time. August’s defence-ministerial meeting advanced the broader idea of joint ship design and construction, but the joint statement stopped short of naming the Mogami-class specifically. The accurate description, for now, is a live possibility under discussion rather than a signed deal though the logic of the UNICORN pilot suggests that if smaller-scale cooperation proves workable, a larger shipbuilding arrangement becomes considerably more plausible.
The Wider Indo-Pacific Chessboard
None of this is happening in a bilateral vacuum. In February, the Indian Navy conducted its first-ever trilateral PASSEX with Japan and Indonesia in the Andaman Sea, around the same time India hosted the International Fleet Review 2026 in Visakhapatnam with ships from 74 nations, reportedly the largest international naval gathering India has hosted since independence. India has also just resumed the chairmanship of the Indian Ocean Naval Symposium after a sixteen-year gap.
Both governments frame their cooperation around a “Free and Open Indo-Pacific,” and the joint statement’s language opposing “unilateral actions” and attempts “to change the status quo through force or coercion” is the kind of formulation that names no country while leaving little doubt about which one is meant. As members of the Quad alongside the United States and Australia, India and Japan are also expanding cooperation through the Indo-Pacific Logistics Network for disaster response, and deepening research ties between India’s DRDO and Japan’s Acquisition, Technology and Logistics Agency (ATLA).
The Expert View
K. Yhome, a Fellow at the Shillong-based Asian Confluence think tank and a long-time Indo-Pacific watcher, frames the shift in useful terms. India-Japan ties have long been strong across economics, politics, culture and people-to-people exchange, he notes, but defence cooperation lagged not because India dragged its feet, but because Japan’s own constitutional and policy constraints held it back. That changed meaningfully once Tokyo eased its defence-export rules this April.
Yhome links the shift to a broader regional mood: as China grows stronger, unease has spread among its neighbours, compounded by a sense under the current US administration that Washington can no longer be assumed to be the region’s automatic security guarantor. In that vacuum, he argues, middle powers are being pushed to “step up their game” and build security partnerships of their own. He is careful to add, though, that this is unlikely to harden into a formal alliance any time soon; its value lies instead in two strategically autonomous powers combining complementary strengths India’s geography, workforce and industrial reach with Japan’s technology and maritime expertise.
Not War Preparation – A Longer Game
It is tempting to read all this as India gearing up for conflict. Most serious observers of India’s defence posture would call that too narrow a reading. What is under way looks much more like a long-horizon industrial strategy, moving through a familiar sequence: research, technology transfer, joint development, joint production, and eventually indigenous manufacturing. That sequence rarely pays off quickly the genuine returns on defence-industrial investments of this kind typically show up seven to ten years later, meaning the real test of what was signed this August may not arrive until sometime between 2032 and 2035.
That timeline sits comfortably alongside the horizon New Delhi has set for itself more broadly: the government’s “Viksit Bharat @2047” vision, aimed at the centenary of independence, imagines an India capable of designing and building its own defence technology and, eventually, of exporting that capability to others.
The Bottom Line
The India-Japan maritime security arrangement is best read not as a single event but as the latest chapter in a fairly continuous story one that runs from a prime minister calling his counterpart “younger sister” in July to defence ministers signing shipbuilding language in August. It began with something as modest as a mast. Where it ends depends on whether two governments with very different strengths can actually make them work together in practice. For now, both sides say they intend to accelerate talks on a fourth India-Japan “2+2” foreign and defence ministerial meeting in Tokyo before the year is out though, notably, no date has yet been announced.