Full-scale Development of Japan's Counterattack Capability: The Strategic Shift Demonstrated by the Improved Type 12 Anti-Ship Missile and EC-2 Electronic Warfare Aircraft

In March 2026, a historic turning point is occurring in Japan's defense strategy. On March 10, the Ministry of Defense announced the deployment of the domestically produced long-range missile, the "High-Speed Glide Projectile for Island Defense (HVGP)," to the Japan Ground Self-Defense Force's Kengun Base. Furthermore, on March 31, the improved Type 12 surface-to-ship missile, extended to a range of approximately 1,000 kilometers, will be deployed for the first time in actual combat at a Japan Ground Self-Defense Force facility in Kumamoto Prefecture. These developments are a realization of Japan's strategy to possess "counterstrike capabilities" (enemy base attack capabilities), which was decided by the Cabinet in 2022, symbolizing a fundamental transformation in Japan's post-war defense policy.

The Type 12 surface-to-ship missile is a domestically developed weapon system that the Ministry of Defense's Technical Research and Development Institute has been advancing since the early 2000s. The initial basic model was set with a range of approximately 200 kilometers, primarily aimed at coastal defense. However, with the acceleration of China's naval power enhancement and North Korea's ballistic missile development, the Japanese government decided to develop an extended-range version. The budget for fiscal year 2026 allocates 11.3 billion yen (approximately 280 million dollars) for the procurement of this improved system. The deployment to Kumamoto Prefecture aims to strengthen anti-ship attack capabilities in the southwestern islands and is noteworthy for its geographical positioning in anticipation of a crisis in the Taiwan Strait.

Another important development to note during this period is the first flight of the Japan Air Self-Defense Force's next-generation electronic warfare aircraft, the EC-2 Stand-off Jammer. On March 17, this aircraft successfully completed its first flight at Gifu Base. Based on the C-2 transport aircraft developed by Kawasaki Heavy Industries, it possesses the capability to disrupt the enemy's electromagnetic spectrum from a distance. The large aircraft, measuring 43.9 meters in length, 44.4 meters in wingspan, and 14 meters in height, is equipped with two General Electric CF6-80C2K turbofan engines, allowing it to fly at a maximum speed of Mach 0.82 (approximately 1,000 kilometers per hour).

The EC-2's most significant feature is the integration of the J/ALQ-5 electronic countermeasure system. According to reports from March 2026, this system has been transplanted into the new EC-2 electronic warfare aircraft, designed to conduct electromagnetic disruption from outside the range of enemy air defense networks. The aircraft's distinctive bulging nose, additional fairings on the upper body and sides, are optimized to house antenna arrays for radar detection, radio frequency activity monitoring, and electronic warfare jamming. According to the Ministry of Defense's budget documents, the development cost of the EC-2 has reached 41.4 billion yen (approximately 280 million dollars), with plans to procure four units. This positions it as the successor to the EC-1 electronic warfare aircraft, which was introduced in June 1986 and currently has only one unit in active service.

The deployment of these systems clearly indicates that Japan is shifting from its post-war fundamental policy of "defensive defense" to a more proactive deterrence strategy. Prime Minister Sanae Takaichi has expressed a strong commitment to strengthening defense capabilities and modernizing military power, including statements regarding the defense of Taiwan. In fact, Japan's defense budget is set to reach a record high in fiscal year 2026, with long-range missile systems and enhancements to electronic warfare capabilities at its core.

From a strategic context, these developments also represent an evolution in the division of roles within the framework of the U.S.-Japan alliance. In addition to the strategic deterrence provided by the U.S. military, Japan's possession of "counterstrike capabilities" enhances the reliability of the deterrent posture in Northeast Asia. Notably, the Type 12 missile's range of 1,000 kilometers covers a significant portion of the Korean Peninsula and theoretically includes parts of the Chinese coastline within its range. This sends a clear message to potential adversaries that attacks on Japanese territory or U.S. military bases would incur immediate consequences.

The introduction of the EC-2 electronic warfare aircraft further diversifies this deterrent posture. Securing electromagnetic spectrum superiority is critically important in modern warfare, and the ability to neutralize enemy communication, radar, and command and control systems becomes a pillar of defense alongside missile defense. The EC-2 is not merely a jamming aircraft; it retains the capabilities of the C-2 transport aircraft, allowing it to carry a maximum payload of 36 tons, capable of transporting heavy equipment such as the Patriot air defense system and H-60 helicopters. This versatility enables flexible operations in times of crisis.

However, such military enhancements also provoke regional reactions. The Chinese Foreign Ministry has criticized Japan's defense buildup as "an act that heightens regional tensions," and Russia has also increased its vigilance regarding Japan's movements in the Far East. North Korea condemns Japan's "militarization," using it as one of the justifications for its nuclear and missile development. While such criticisms were anticipated, they present Japan with the challenging task of balancing the necessity of strengthening defense capabilities with regional diplomacy.

Relations with South Korea are also delicate. Although Japan and South Korea are strengthening trilateral cooperation through the United States, historical and territorial issues continue to be obstacles in bilateral relations. The Type 12 missile's range covering the Korean Peninsula could provide South Korea with a sense of security, while also raising concerns about Japan's military expansion. This complex psychology is one of the factors hindering the advancement of security cooperation in Northeast Asia.

The shift in Japan's defense strategy should be understood as part of a broader geopolitical change. Under the triple pressures of deepening U.S.-China rivalry, Russia's invasion of Ukraine, and the entrenchment of North Korea's nuclear armament, Japan has been compelled to fundamentally reassess its defense capabilities. The expectations of "peace dividends" following the Cold War have dissipated, and as Japan enters an era often referred to as a new Cold War, it is being urged to enhance its strategic autonomy.

The deployment of the Type 12 missile and the EC-2 electronic warfare aircraft is merely the first step. The Ministry of Defense plans to introduce further long-range missile systems, unmanned aerial vehicles, cyber defense capabilities, and space surveillance systems over the next few years. The fiscal year 2026 budget also includes the acquisition of equipment to monitor electromagnetic disruption against satellites, and the Air Self-Defense Force is expected to be reorganized into a "Aerospace Self-Defense Force (tentative name)" in the future. All of these developments indicate that Japan is transforming into a modern military organization with multi-domain operational capabilities.

Ultimately, the movements in March 2026 carry symbolic significance. Japan has not completely abandoned the post-war framework of the pacifist constitution and defensive defense, but it is significantly expanding its interpretation and application. The very concept of "counterstrike capabilities" is a prime example of this. This implies having options that are close to a de facto preemptive strike capability while maintaining consistency with constitutional constraints. This delicate balance will likely continue to be a subject of intense debate within Japan.

From the perspective of the international community, Japan's strengthening of its defense capabilities will have significant implications for the balance of power in the Indo-Pacific region. The United States welcomes the enhancement of its ally Japan's capabilities, which will lead to a reduction of the burden on U.S. forces and strengthen regional deterrence. On the other hand, China and Russia are likely to view this move as part of a containment strategy and may take countermeasures. This dynamic increases the risk of an arms race in Northeast Asia.

In conclusion, the March 31 deployment of the improved Type 12 surface-to-ship missile and the development of the EC-2 electronic warfare aircraft embody a historic turning point in Japan's defense policy. These are not merely the introduction of new equipment but part of a strategic reorganization for Japan to adapt to the dramatic changes in the regional security environment. In the coming years, how these capabilities are utilized and their impact on regional stability will hold the key to peace and security in Northeast Asia. Japan's choices reflect the tension between the ideal of defensive defense and the necessity to address real threats, and this tension will continue to be a central issue in Japan's diplomacy and defense policy.