Japan has released its 2025 Defense White Paper, warning of the most severe security environment in the postwar era as it confronts rising threats from China, North Korea, and Russia.
The document outlines a sweeping strategy to strengthen the country’s defense posture in response to growing instability across the Indo-Pacific.
According to Japan’s Ministry of Defense, China continues to increase military spending at a high rate, rapidly expanding its capabilities in both quantity and quality. The ministry said Beijing’s activities in the East China Sea, including waters near the Senkaku Islands, and its growing presence in the Western Pacific, have created a “strategic challenge without precedent.”
The report also highlights North Korea’s focus on weapons of mass destruction and ballistic missile development. Pyongyang has conducted frequent missile launches, including solid-fueled intercontinental ballistic missiles (ICBMs) capable of reaching Japanese territory, the paper noted.
As Russia continues its invasion of Ukraine, the white paper said Moscow has stepped up military activity near Japan, including joint air and naval exercises with China. The ministry warned that these operations directly threaten Japan’s security.
“The current international order is under severe strain,” the defense minister said in a statement accompanying the report. “Japan’s surroundings are more complex and dangerous than at any time since World War II.”
The document lays out a detailed plan to bolster Japan’s defense capabilities, including the development of long-range counterstrike systems, joint air defense and missile defense capabilities, and expanded use of unmanned systems. The ministry stressed the importance of space, cyber, and electromagnetic operations as essential to Japan’s defense.
To enable faster and more flexible responses, the Self-Defense Forces established a new Joint Operations Command in March. The command will oversee cross-domain operations integrating land, sea, air, space, cyber, and electronic warfare units.
Japan’s relationship with the United States remains central to its strategy. The paper described the U.S.-Japan alliance as the “cornerstone of peace and stability in the Indo-Pacific.” Joint efforts include co-developing advanced technologies such as the Glide Phase Interceptor (GPI) to counter hypersonic weapons.
The report also emphasized partnerships with “like-minded nations” including India, Australia, and Southeast Asian countries. In May, Japanese and Indian officials agreed on closer coordination under the JIDIP initiative to enhance regional security.
Defense officials underscored their commitment to strengthening the domestic defense industry, calling for investments in production capacity for ammunition, fuel, and critical components. “We must build a resilient and sustainable foundation to support Japan’s defense in an era of prolonged crisis,” the minister said.
The 2025 budget includes $66 billion to support these initiatives, with a target of raising defense spending to 2% of GDP by 2027.
The white paper also outlined efforts to improve conditions for Self-Defense Forces personnel, including higher pay, better housing, and career support programs.
The report comes as tensions rise across East Asia. In May, a Chinese coast guard helicopter reportedly entered Japanese airspace near the Senkaku Islands, sparking protests from Tokyo. In addition, Chinese military drills around Taiwan and increased Russian deployments in the Kuril Islands have heightened Japanese concerns.
The document reflects a fundamental shift in Japan’s postwar defense posture, as Tokyo moves to counterbalance China’s growing military assertiveness and North Korea’s nuclear ambitions.