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From Constitutional Pacifism to a Doubling of the Defense Budget

Japan has been undergoing a profound transformation of its defense doctrine since 2022. Article 9 of the Japanese Constitution—which, under its traditional interpretation, severely limited the country’s offensive military capabilities—has been gradually reinterpreted to allow for the exercise of collective self-defense. The government of Prime Minister Fumio Kishida, and subsequently his successor, adopted a roadmap calling for a doubling of the defense budget to reach 2% of GDP by 2027—approximately $80 billion annually, which would make it the third-largest defense budget in the world.

This historic shift in policy is directly linked to Tokyo’s assessment of a fundamentally deteriorated regional security environment: China’s military buildup, North Korea’s nuclear and ballistic missile programs, and lessons learned from Russia’s invasion of Ukraine in 2022. Japan has also announced the acquisition of Tomahawk missiles and deep-strike capabilities against enemy territory—a first since 1945.

Japan’s New Capabilities That Worry Beijing

The Japanese investments of greatest concern to Beijing include the acquisition of long-range cruise missiles, the development of a hypersonic missile program, and the strengthening of cyberdefense capabilities. Japan has also strengthened its defense partnerships with the United States, the United Kingdom, and Australia—notably through the AUKUS Pillar II framework, which facilitates the exchange of advanced defense technologies.

These developments are transforming Japan from a primarily defensive actor into a regional security partner capable of projecting significant conventional power. For Beijing, which has long benefited from a regional environment where its immediate neighbors maintained limited military postures, this transformation is perceived as a direct threat to its regional hegemony.


The historical irony is striking: it is precisely Beijing’s behavior—massive naval rearmament, militarization of the South China Sea, and pressure on Taiwan—that has pushed Japan to abandon its strategic pacifism. Accusing Tokyo of militarism while the PLA has increased its defense budget fivefold in twenty years amounts to rhetoric whose reversal of cause and effect should be obvious.

This content was created with the help of AI.

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