日本若将防卫开支提升至国内生产总值（GDP）的3%，将标志着其战后安全政策的重大转变。长期以来，日本受和平宪法第九条约束，奉行“专守防卫”原则，并将防卫预算控制在GDP的1%左右。近年来，面对地区安全环境的变化，特别是中国军力增长、朝鲜导弹威胁以及台海局势紧张，日本政府逐步调整防务战略。2022年，日本已宣布计划到2027年将防卫开支提高至GDP的2%。若进一步升至3%，其年度防卫预算将超过15万亿日元（约合1000亿美元），成为全球第三大军事支出国家，仅次于美国和中国。这一举措不仅意味着日本自卫队将获得更先进的武器装备、更强的远程打击能力和网络/太空防御体系，也可能推动修宪讨论，弱化和平主义传统。同时，此举将强化美日同盟，但也可能引发邻国尤其是中韩的担忧，加剧地区军备竞赛风险。总体而言，3%的防卫开支目标反映出日本从“被动防御”向“主动威慑”战略的深刻转型，对亚太安全格局具有深远影响。
If Japan raises its defense spending to 3% of its Gross Domestic Product (GDP), it would signal a major shift in its post-war security policy. For decades, constrained by Article 9 of its pacifist constitution, Japan adhered to a “strictly defensive” posture and kept defense expenditures around 1% of GDP. In recent years, however, amid evolving regional security challenges—including China’s military expansion, North Korea’s missile threats, and tensions across the Taiwan Strait—Japan has gradually revised its defense strategy. In 2022, Tokyo announced plans to increase defense spending to 2% of GDP by 2027. Reaching 3% would push Japan’s annual defense budget beyond ¥15 trillion (approximately $100 billion), making it the world’s third-largest military spender after the United States and China.Such a move would enable the Japan Self-Defense Forces to acquire more advanced weaponry, enhance long-range strike capabilities, and develop robust cyber and space defense systems. It could also accelerate debates on constitutional revision and further erode Japan’s traditional pacifism. While strengthening the U.S.-Japan alliance, this policy shift may raise concerns in neighboring countries—particularly China and South Korea—and potentially fuel a regional arms race. Overall, a 3% defense spending target reflects Japan’s strategic pivot from passive defense to active deterrence, with profound implications for Asia-Pacific security dynamics.
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