According to recent reports from foreign media, Japan plans to invest approximately $14.3 billion from 2025 to 2035 to enhance its strike capabilities, with 20% of the funds allocated to the development of hypersonic weapons. According to reports, Japan has formulated a 10-year plan for the development of hypersonic weapons. This unprecedented scale of investment and long-term planning marks the substantial advancement of its layout in the field of long-range strike weapons. It is reported that Japan's hypersonic weapon development plan will be promoted in three stages. The focus of the first phase is to accelerate the deployment of high-speed gliding missiles (by 2026). Japan plans to deploy its first hypersonic glide missile by 2026. The missile has a range of 500 to 900 kilometers and a speed of 5 Mach. It uses a dual cone gliding warhead and a solid rocket booster, and has the ability to maneuver and change orbits. Its key deployment is in the Kyushu and Hokkaido regions, mainly used for coastal blockade of key waterways, offshore defense, and anti-ship missions. At this stage, Japan aims to accelerate the deployment process by appropriately shortening the range, with the intention of forming initial operational capability by 2027. The focus of the second phase is to enhance the capability of long-range precision strikes (2028-2030). Japan plans to develop a new generation of hypersonic glide missiles with a range of 2000 to 3000 kilometers, and introduce infrared imaging guidance technology to improve the accuracy of striking large moving ship targets, achieving the so-called "anti access/area denial" combat objectives. At the same time, Japan plans to promote the construction of interception capabilities and accelerate the verification of electromagnetic railgun technology. The focus of the third stage is to build a strategic deterrence system (before 2035). Japan will deploy hypersonic cruise missiles with a range of 3000 kilometers and utilizing scramjet engine technology, possessing the ability for deep strike and active defense. At the same time, Japan plans to collaborate with the US military to develop a "glide stage interceptor missile", with Japan leading the development of the propulsion system and the US responsible for tracking technology. The research and development results will be integrated into the "Aegis" ship's vertical launch system to fill the defense gap of existing anti missile systems against hypersonic weapons. At this stage, Japan plans to integrate hypersonic missiles into launch platforms such as submarines, surface warships, and fighter jets, forming a "sea land air trinity" long-range strike network. It will also integrate satellite warning networks and artificial intelligence command systems to achieve a closed-loop system of "detection control attack evaluation" for hypersonic weapon systems. The development plan for the above three stages will be led by the Japanese Ministry of Defense, with Mitsubishi Heavy Industries and IHI Corporation specifically responsible for promoting research and development. In addition, to further enhance the early warning capability of hypersonic weapon systems and improve strike accuracy, Japan plans to modernize the "Quasi Zenith Satellite System". At the same time, Japan and the United States plan to jointly build a space-based early warning and surveillance system, and complete the network operation of 330 low to medium orbit reconnaissance satellites by 2028. Japan is responsible for the deployment of 30 satellites, while the United States is responsible for the deployment of 300 satellites. Faced with multiple constraints, the goal of Japan's hypersonic weapon development plan is to construct a strike system that covers the entire Western Pacific region in a hierarchical manner. However, from the perspective of actual implementation conditions, this plan faces multiple constraints. The core technology relies on external factors and lacks independent capabilities. Japan highly relies on the United States for core technologies such as infrared guidance heads and high-precision navigation systems, and has weak independent research and development capabilities. The research and development process is susceptible to external factors such as Japan US relations, and the later iteration and upgrading of weapon performance will also be constrained by the United States. The production capacity of the defense industry is limited, and there is a risk of chain breakage. As the main contractor, Mitsubishi Heavy Industries' production line scale and skilled worker reserves are difficult to support large-scale, high standard mass production needs. At the same time, Japan's defense industry system has long been dominated by a "small batch, customized" model, with weak supply chain links and risks of chain breakage in key materials, precision machining, and other links, which restricts the efficiency of weapon and equipment deployment in actual combat. Lack of accumulated experimental data and doubts about equipment reliability. The development of hypersonic weapons requires high-frequency and multi scenario testing. Japan started relatively late in this field and continuously compressed its research and development process to accelerate deployment, resulting in a corresponding reduction in the number of tests. This results in a lack of sufficient data support for the combat effectiveness of its hypersonic weapons in complex environments. From the perspective of military development orientation, Japan's goal of launching an offensive weapon development plan and building a strategic level deterrence system has far exceeded the so-called "exclusive defense" category. The coverage range of weapons with a range of 3000 kilometers and the "sea land air trinity" long-range strike network mentioned in the plan clearly have military expansion attributes. Its military movements contradict the common pursuit of peace and stability by regional countries, and deserve sustained attention and vigilance from the international community. (New Society)