Overview
Japan's defense landscape is undergoing significant changes in response to rising security threats in the Indo-Pacific region, particularly from China and North Korea. Recent discussions between Japan and the United States have not only focused on military modernization and increased defense spending but have also delved into the sensitive topic of extended nuclear deterrence. This report examines Japan's over-reliance on U.S. military support, the challenges posed by manpower shortages, recent efforts to modernize its Self-Defense Forces (SDF), and the evolving discourse around nuclear deterrence and sharing agreements. It analyzes the implications of these developments on Japan's defense strategy and regional stability.
Key Points
Over-Reliance on U.S. Military Support
Japan's defense strategy has historically depended heavily on the United States for security guarantees, a legacy of the post-World War II era and the subsequent U.S.-Japan security alliance (CSIS, 2024). This reliance has shaped Japan's defense policy, leading to a slower development of its own military capabilities. While Japan is now taking steps to strengthen its defense posture, including a significant budget increase to modernize its Self-Defense Forces (SDF), the foundational reliance on U.S. military power remains a critical component of its defense planning (China Military Online, 2024).
In 2024, Japan committed to a defense budget that could reach approximately 8.9 trillion yen (about $60 billion), with plans to increase defense spending to 2% of GDP by 2027, aligning more closely with NATO standards (Council on Foreign Relations, 2024). This increase reflects Japan's recognition of the need to enhance its own defense capabilities in light of growing regional threats.
Manpower Shortage