Japan’s Defense Minister Shinjiro Koizumi (C) walks onto the factory floor with Shunsuke Toya (L), CEO and President of Prodrone, at the Prodrone research facility in Nagoya on May 20, 2026, as Japan pushes to expand military drone capabilities with nearly USD 850 million earmarked for unmanned defense systems in its 2026 defense budget.
ANDREW CABALLERO-REYNOLDS/AFP via Getty Images
Japan’s Defense Ministry submitted its largest-ever budget request on Monday, asking for ¥8.9 trillion (approximately $55.7 billion) for the fiscal year beginning April 2027. The figure is a 15th consecutive annual record, and it is almost certainly too low. Ministry officials acknowledged they calculated the request at a ¥149-per-dollar planning rate — while the yen was trading at approximately ¥160 per dollar on Monday, meaning every US-made weapon system in the plan costs Japan roughly 7% more in real purchasing power than the headline suggests. The final budget, expected to be decided by year-end, is widely projected to exceed ¥10 trillion (approximately $62.5 billion USD).
The request is the fifth and final installment of Japan’s five-year Defense Buildup Program — a ¥43 trillion (approximately $269 billion USD) commitment that Tokyo launched in December 2022 and that has already produced one milestone: Japan reached its target of spending 2% of GDP on defense in fiscal year 2025, two full years ahead of its original schedule.
What makes this request distinctive is not the dollar figure but the technology architecture inside it. The ministry is not simply asking for more of the same — more destroyers, more fighters, more missiles. It is asking for an AI orchestrator, for drones it wants to mass-produce at “low cost,” for submarine-launched hypersonic missiles, and for a dedicated unit to counter cognitive warfare. Each of these is a meaningful capability leap from anything Japan’s Self-Defense Forces currently operate.
What an AI Orchestrator Actually Means for Japan’s Military
The most technically significant element of the request is the ministry’s bid to establish what it calls an “AI orchestrator” — a meta-coordination platform designed to integrate and direct multiple AI subsystems simultaneously across different mission profiles. According to Japan’s record defense budget request, the system would enable autonomous selection and operation across different tactical situations.
In military command-and-control architecture, an orchestrator plays the role that software like Kubernetes plays in cloud computing: it manages a set of autonomous subsystems (each handling a specific data stream or decision function), coordinates their outputs, resolves conflicts between their recommendations, and presents a synthesized operational picture to human commanders. The parallel is instructive. Just as a cloud orchestrator does not run applications — it manages where and how they run — a military AI orchestrator would not, in Japan’s stated conception, make autonomous engagement decisions. Instead, it would coordinate the AI agents that process satellite imagery, signals intelligence, friendly-force positioning, and threat-state assessments, and surface a coherent course-of-action recommendation to the Joint Operations Command decision chain.
The ministry also separately requested funds for an AI-supported decision-making process specifically for the Joint Operations Command — the unified command, established in March 2025, that coordinates the Ground, Maritime, and Air Self-Defense Forces and liaises with US Forces Japan. The Joint Operations Command overview describes a force designed to handle complex regional contingencies across all operational domains. These are two related but distinct capabilities: the orchestrator is the architecture; the Joint Operations Command decision-support system is a specific application of it.
Together, they represent Japan’s answer to what US military planners have called JADC2 — Joint All-Domain Command and Control — the concept of connecting sensors, decision-makers, and weapons across every operational domain in near-real time. Japan’s version is domestically framed but explicitly interoperable with US Forces Japan, and the ministry’s stated plan to blend foreign (including American) AI technologies with domestically developed systems reflects the alliance’s deepening technical integration.
The ministry also requested funds for AI-enhanced video analysis tools to sharpen surveillance capabilities while reducing the manpower demands on the force — a pragmatic concession to Japan’s demographic reality: an aging and shrinking population that is already straining military recruitment.
Japan Wants to Lead in Drones: Why That Goal Is Harder Than the Budget Implies
The budget request devotes considerable emphasis to autonomous unmanned systems. The ministry’s goal is to develop attack drones designed to operate in tandem with long-range standoff missiles — creating cost-effective counterstrike packages that can saturate enemy defenses at a fraction of the cost of conventional manned platforms. The ministry’s stated ambition is explicit: it aims to become “the world’s leading organization in the utilization of unmanned assets,” according to Japan’s record defense budget request.
The engineering logic is sound. A swarm of inexpensive autonomous vehicles coordinated with expensive precision-guided munitions effectively multiplies the strike capacity of the latter by saturating an adversary’s finite supply of interceptors. Ukraine’s experience against Russian drone and missile barrages has demonstrated both the tactical value and the attrition economics of this approach in live combat.
The supply-chain economics, however, present a structural problem that the request does not fully resolve. Japan’s commercial drone market is dominated by imports from China — primarily DJI, the Shenzhen-based manufacturer that controls an estimated 70% or more of the global commercial drone market. As a drone supply chain expert assessment from the AP noted in Monday’s reporting, “developing fully homemade drones, given that Japan’s commercial market is dominated by imports from China, would be a challenge.” The components that make low-cost drone mass-production feasible — flight control chips, brushless motors, electronic speed controllers, gimbal processors, battery cells — are overwhelmingly Chinese-sourced.
This creates a genuine strategic tension. Japan’s security posture toward China — the same posture that motivates this entire buildup — makes accepting Chinese-sourced components in military drone production a significant vulnerability. The practical alternatives all carry costs: partnering with US manufacturers (AeroVironment, Skydio) or European suppliers is more expensive and slower; building a domestic supply chain from scratch in flight control semiconductors, motor manufacturing, and battery cells would require investment well beyond what is visible in the current request. The unpriced nature of the drone acquisition line items in this request may partly reflect that this engineering and industrial problem has not yet been resolved.
Hypersonic Missiles from Submarines: Why the Convergence Matters
Perhaps the most strategically significant capability in the request — and the least understood by general audiences — is the program to develop hypersonic missiles capable of being launched from submarines. The Japan’s maritime program breakdown from Naval News details the broader maritime procurement context.
To understand why this convergence matters, consider the two capabilities separately. Submarines derive their strategic value primarily from stealth: their position is unknown to adversaries, which means a submarine-based retaliatory force cannot be neutralized in a first strike. Hypersonic weapons — generally defined as systems traveling at Mach 5 (approximately 6,174 km/h or 3,836 mph) or above — derive their value from speed: they reduce the warning time available to defensive systems to seconds, making interception with current technologies extremely difficult.
A submarine-launched hypersonic weapon combines both advantages simultaneously. The launch cannot be anticipated because the platform’s position is unknown; and once the weapon is in flight, it arrives faster than existing intercept systems can reliably respond. Russia’s Zircon (3M22), currently the only operationally deployed ship/submarine-capable hypersonic missile, illustrated this convergence when it was used in combat against Ukraine — in the July 6, 2026 attack on Kyiv, not one of six Zircon weapons was intercepted. As Japan’s Patriot interceptor constraints have highlighted, the supply gap for interceptors underscores the strategic value of weapons that are difficult to stop. Japan’s program is in development, not deployment, and the request does not specify funding amounts for this program — it is among the blank-cost items pending the year-end security document revision.
The engineering challenges are formidable. Hypersonic vehicles generate extreme heat at leading edges — surface temperatures can exceed 2,000°C (3,632°F) — requiring thermal protection systems that add mass and complexity to a weapon that must fit within a submarine’s launch tubes. The booster stage that accelerates the weapon to hypersonic velocity must burn out cleanly before the hypersonic phase begins. Japan has the aerospace engineering base to address these challenges, but the timeline and cost are substantial.
Japan’s Cognitive Warfare Unit: Defending the Information Battlefield
One of the more novel elements of the request is a dedicated unit to defend against cognitive warfare — a domain of conflict that targets public opinion, social cohesion, and national decision-making through disinformation campaigns, deepfakes, social media manipulation, and coordinated information operations. The Japan’s record defense budget request confirms the ministry’s commitment to this new institutional capability.
NATO formally codified cognitive warfare as the sixth domain of warfare — alongside land, sea, air, space, and cyber — in its Warfare Development Agenda in the early 2020s. Russian operations in Ukraine (beginning in 2014 and accelerating in 2022) and Chinese “three warfares” doctrine (public opinion warfare, psychological warfare, legal warfare) are the primary real-world references driving allied militaries’ institutional responses. For Japan specifically, the threat environment includes both actors: Chinese information operations targeting Japanese public opinion on Taiwan, and North Korean and Russian influence campaigns targeting Japan’s alliance relationships.
The establishment of a dedicated institutional home for countering these threats signals that Tokyo’s security planners have concluded that military competition now extends well into the information environment — and that defending Japan’s territory means defending the cognitive and information ecosystem that shapes popular support for that defense.
The Five-Year Buildup: Ahead of Schedule, Now Constrained by Yen Weakness
Monday’s request is the final installment of Japan’s five-year Defense Buildup Program. The government reached its headline goal of spending 2% of GDP on defense in fiscal year 2025 — two full years ahead of the original schedule. Under the five-year program, Japan is on track to become the world’s third-largest defense spender after the United States and China.
The ¥8.9 trillion figure, however, is better understood as an opening bid than a final price. Around 160 items in the request — including missiles, drones, and digital systems — carry no specified funding amount, as confirmed by the opening bid analysis in The Diplomat. Prime Minister Sanae Takaichi’s government plans to revise Japan’s three core national security documents by year-end, and those revisions will determine the funding levels for the blank-cost programs. Defense officials have suggested the final enacted budget could swell to ¥10 trillion (approximately $62.5 billion USD) — a new psychological threshold Japan has never crossed — once those revisions are incorporated.
There is also a purchasing-power dimension that the headline figure obscures. When Japan designed its five-year buildup plan in December 2022, it used ¥108 per dollar as the long-term planning benchmark. The ministry said it calculated the FY2027 request at ¥149 per dollar. The yen was trading at approximately ¥160 per dollar on Monday, per the current yen-to-dollar rate. The gap matters concretely: every US-made system in Japan’s procurement plan — Tomahawk cruise missiles, PAC-3 interceptor components, F-35 parts, and any future American hypersonic technology — costs Japan roughly 7% more in real purchasing power than even the updated ¥149 benchmark implies, and roughly 48% more than the original 2022 planning rate. The ministry acknowledged this currency headwind explicitly in pre-announcement briefings, calling it a structural challenge to the program’s real-terms value.
Shoring Up Defense Industry: “Production Capacity Itself Is Deterrence”
The request addresses a concern that has become increasingly prominent in Japan’s defense planning: supply-chain fragility. Ministry officials have warned that private suppliers are exiting the defense market — deterred by administratively burdensome contracts that represent only a small share of their overall business — and that Japan could face critical equipment shortages during a crisis if this trend continues.
The proposed solution is a state-owned, contractor-operated production model: the government would acquire factories and outsource manufacturing to private firms, ensuring that essential production capacity remains available regardless of commercial market dynamics. The ministry’s summary phrase for this approach is pointed: “production capacity itself is deterrence,” as described in Japan’s record defense budget request and confirmed by The Diplomat’s opening bid analysis. Additional funding would support company-level defense R&D and business restructuring to make participation in defense supply chains more commercially viable for Japanese industry.
Is Japan Actually Ready to Field This Technology?
The budget request also includes approximately $1.4 billion for the operational costs of US Forces Japan — covering Japanese workers employed on American bases and base utility costs — as well as unspecified funding for ongoing US force realignment in Japan, including the long-running relocation of Marine Corps Air Station Futenma to another site on Okinawa.
Japan’s defense transformation is driven by what officials describe as the most challenging regional security environment since World War II. China’s military posture toward Taiwan and disputed islands in the East China Sea remains the primary concern; North Korea continues to advance its ballistic missile and nuclear programs; and Russia’s military presence in the region has added a third axis. Japan has already taken concrete steps to operationalize its new posture — deploying ground-launched missile units to southwestern islands between the home islands and Taiwan, acquiring counterstrike capabilities to threaten enemy launch sites, and liberalizing arms export rules to enable deeper defense-industrial cooperation with allies.
The technologies in this request — AI command orchestration, autonomous drone swarms, submarine-launched hypersonics, cognitive warfare defense — are, taken together, a genuine capability leap. Whether Japan can actually develop and field them within the timeline the five-year plan envisions is a different question. Three structural constraints bear watching. First, the yen purchasing-power gap is real and not fully addressed in the current request’s accounting. Second, the drone mass-production goal faces a supply-chain problem rooted in Chinese commercial market dominance that has no cheap solution. Third, roughly 160 programs in this request have no price tag yet, which means the final budget — and the final capability — will not be known until the security document revision process concludes later this year.
The request now enters Japan’s budget formulation process, with a decision expected before the end of 2026. For the global defense technology sector, the direction is unmistakable: Japan is investing in the most technically demanding and contested technologies of modern warfare, and the gap between its ambitions and what its current budget can buy may itself shape how those ambitions are funded.
Frequently Asked QuestionsWhat is the AI orchestrator Japan’s military is requesting, and how does it differ from regular military AI?
Standard military AI systems are narrow: each handles a specific task — analyzing satellite imagery, classifying acoustic signals, tracking friendly positions — and they operate largely in isolation from one another. An AI orchestrator is a coordination layer that sits above these specialized systems and manages their interactions. It routes data between AI agents, resolves conflicting outputs, and presents a unified operational picture to human commanders. Japan’s request specifically aims to enable “autonomous selection and operation across mission profiles” — meaning the orchestrator would not just display information but coordinate which AI systems take priority in different tactical situations. This is architecturally similar to the US JADC2 (Joint All-Domain Command and Control) concept, and it represents a meaningful step beyond simple AI-assisted surveillance or logistics.
Why is Japan developing submarine-launched hypersonic missiles, and how close is it to having them?
Submarine-launched hypersonic weapons combine two independently powerful capabilities: the positional stealth of a submarine (whose location is unknown to adversaries) and the speed of a hypersonic weapon (Mach 5 or above, approximately 3,836 mph), which arrives faster than current intercept systems can reliably respond. Together they create a near-impossible-to-counter first- or second-strike capability. Japan’s program is in early development — the funding amount is one of the approximately 160 blank-cost items in the request, meaning no specific dollar figure is yet attached — and the engineering challenges are substantial (thermal protection, submarine-tube launch architecture, booster design). Fielding is likely a decade away, but the program’s existence signals a fundamental shift in Japan’s strategic posture from purely defensive to genuinely deterrent.
What is cognitive warfare and why is Japan building a dedicated unit to counter it?
Cognitive warfare refers to operations designed to shape the beliefs, decisions, and cohesion of a target population — using disinformation campaigns, deepfakes, social media manipulation, and psychological operations rather than physical weapons. NATO designated it the sixth domain of warfare in the early 2020s, alongside land, sea, air, space, and cyber. For Japan, the primary threat vectors are Chinese information operations targeting Japanese public opinion on Taiwan and the US alliance, and Russian and North Korean influence campaigns aimed at undermining allied solidarity. A dedicated institutional unit provides a persistent, specialized capability for detecting, attributing, and countering these operations rather than relying on existing intelligence agencies with broader mandates.
If Japan’s budget request is ¥8.9 trillion, why might the final budget be ¥10 trillion?
The ¥8.9 trillion figure represents only the priced items in the request. Around 160 programs — including many of the most strategically significant ones like drone acquisition quantities, missile programs, and digital systems — were submitted as “item requests” with no funding amount specified. The government deliberately left these blank because Japan’s three core national security documents are being revised by year-end, and some procurement quantities and specifications may change as part of that review. Once the revision concludes and those programs are priced, analysts and defense officials expect the final enacted budget to exceed ¥10 trillion (approximately $62.5 billion USD) — a threshold Japan has never crossed.