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Japan’s Cabinet has approved a record defense budget for the next fiscal year, marking a major step in the country’s effort to strengthen its military posture amid rising regional tensions and what officials describe as the most severe security environment since the end of World War II.

The draft overall budget for fiscal year 2026 is scheduled to take effect in April next year. The overall national budget totals $784 billion. Defense spending alone exceeds $58 billion, the highest level in Japan’s postwar history, and represents a 9.4 percent increase from the previous year.

The decision reflects Tokyo’s determination to accelerate a five-year program aimed at doubling defense spending to 2 percent of gross domestic product; a benchmark Japan has pledged to meet by March, two years earlier than originally planned.

Japanese officials say the budget increase is driven by mounting threats in the region, particularly China’s expanding military activity and the risk of conflict over Taiwan.

A Defense Ministry briefing document states that Japan faces “the most severe and complex security environment” of the postwar era, arguing that the situation requires a fundamental strengthening of defense capabilities across air, sea, land, cyber, and space domains.

Defense Minister Shinjiro Koizumi described the budget as essential rather than optional. “It is the minimum needed as Japan faces the severest and most complex security environment in the postwar era,” Koizumi said. “It does not change our path as a peace-loving nation.”

Prime Minister Sanae Takaichi has also underscored the seriousness of the regional situation. In November, she said Japan’s military could become involved if China were to take action against Taiwan, the self-governing island that Beijing claims as its own.

China Identified as Primary Strategic Challenge

Japan’s current national security strategy, adopted in 2022, explicitly names China as the country’s biggest strategic challenge. The document calls for a more assertive role for the Self-Defense Forces under Japan’s alliance with the United States, marking a significant shift from decades of restraint rooted in postwar pacifism.

Tensions with Beijing have intensified in recent months. Earlier this month, Chinese aircraft carrier drills near southwestern Japan prompted formal protests from Tokyo after Chinese aircraft reportedly locked radar onto Japanese planes, an action widely interpreted as a potential prelude to missile targeting.

Japan’s concerns were further heightened in June when two Chinese aircraft carriers were observed operating simultaneously near the southern Japanese island of Iwo Jima for the first time, underscoring China’s growing ability to project power deep into the Pacific.

In response to these developments, Japan’s Defense Ministry plans to establish a new office dedicated to analyzing Chinese military operations, equipment, and capabilities in the Pacific region.

China has strongly criticized Japan’s military buildup. Foreign Ministry spokesperson Lin Jian accused Tokyo of abandoning its postwar commitment to peaceful development.

“Japan is deviating from the path of peaceful development it has long claimed to uphold and is moving further and further in a dangerous direction,” Lin said.

Missiles and Strike Capabilities at the Core

A central pillar of the new budget is Japan’s expanding missile and strike capabilities, a move that represents a major evolution in its defense doctrine.

More than $6.2 billion has been allocated to enhance Japan’s “standoff” missile capabilities, enabling it to strike enemy targets from a distance. This includes $1.13 billion for the purchase of domestically produced and upgraded Type-12 surface-to-ship missiles, which have an estimated range of about 1,000 kilometers.

The first batch of these missiles is scheduled to be deployed in the southwestern prefecture of Kumamoto by March, a year earlier than initially planned, as Japan accelerates its efforts to reinforce defenses in areas closest to Taiwan and the East China Sea.

Officials describe these capabilities as defensive in nature, aimed at deterrence rather than aggression, but they nonetheless mark a clear departure from Japan’s long-standing limitation of military force strictly to homeland defense.

Unmanned Systems and Coastal Defense

Demographic challenges are also shaping Japan’s defense priorities. With an aging population, a declining birth rate, and persistent difficulties in recruiting and retaining military personnel, the government sees unmanned systems as essential to future defense planning.

The new budget allocates $640 million for the deployment of large numbers of unmanned aerial, surface, and underwater vehicles to strengthen coastal surveillance and defense. These systems will operate under a framework known as “SHIELD,” which is expected to become operational by March 2028.

To ensure rapid deployment, Japan plans to rely initially on imported unmanned systems, potentially sourcing equipment from countries such as Turkey or Israel, while continuing to develop domestic alternatives.

Deepening Defense Industry Cooperation

Alongside military modernization, Japan is seeking to revitalize its defense industrial base and expand international cooperation. For fiscal 2026, the government plans to spend more than $1 billion on the joint development of a next-generation fighter jet with Britain and Italy, with deployment targeted for 2035.

The program also includes research into artificial intelligence-controlled drones designed to operate alongside the aircraft, reflecting a broader push toward integrated, networked warfare capabilities.

Japan has also eased arms export restrictions in recent years, enabling greater participation in international defense markets. In August, Australia selected Mitsubishi Heavy Industries to upgrade the Mogami-class frigate, replacing its fleet of 11 ANZAC-class ships, a decision seen as a significant boost for Japan’s defense industry. The new budget sets aside nearly $64 million to support the defense industrial base and promote overseas arms sales.

Meeting Targets, Funding Questions Remain

If approved by parliament, the budget will represent the fourth year of Japan’s five-year defense buildup plan, which is expected to raise annual defense spending to around $64 billion, making Japan the world’s third-largest defense spender after the United States and China.

The Finance Ministry has confirmed that Japan is on track to meet the 2 percent of GDP target by March, fulfilling a pledge made under sustained pressure from Washington to shoulder a greater share of regional security responsibilities.

However, questions remain about how Japan will finance sustained increases in military spending beyond the current plan. The government intends to fund the buildup through a combination of higher corporate and tobacco taxes, as well as an income tax increase scheduled to begin in 2027.

Prospects for further growth in defense spending as a share of GDP remain uncertain, particularly given Japan’s high public debt and long-term fiscal challenges.

For now, the approval of the record defense budget underscores a decisive shift in Japan’s strategic posture, as Tokyo moves to deter perceived threats and redefine its role in an increasingly volatile Indo-Pacific region.