Core Viewpoint - Japan's recent decision to deploy the 03 medium-range surface-to-air missile system on Yonaguni Island, located only 110 kilometers from Taiwan, is seen as a deliberate move to escalate regional tensions and has raised significant international concern [1][2]. Summary by Sections Military Deployment - Japan's Defense Minister recently inspected the Self-Defense Forces base in the Ryukyu Islands and confirmed that the deployment of the 03 medium-range surface-to-air missile system on Yonaguni Island is progressing rapidly [2]. - The geographical positioning of Yonaguni Island makes any military deployment there highly targeted, particularly towards Taiwan [2]. Missile System Details - The 03 medium-range surface-to-air missile system was developed to replace the outdated U.S. Hawk missile system and consists of a six-pack launcher, radar vehicle, command center, power supply vehicle, and transport vehicle, all based on a heavy truck chassis [2]. - The missile system has a length of 4.9 meters, a maximum range of 50 kilometers, and a maximum altitude of 10 kilometers. An upgraded version, the 03改, has a potential range of up to 100 kilometers [2]. Strategic Intent - Experts suggest that Japan's military presence on Yonaguni Island is a strategic step towards intervening in the Taiwan Strait, marking the beginning of a broader U.S.-Japan strategy in the region [4]. - The deployment of electronic warfare units and missile systems indicates Japan's intent to enhance its military capabilities in the southwestern islands, effectively turning Yonaguni into a forward base [4][6]. Future Developments - Future military operations may involve the deployment of large helicopters and tilt-rotor aircraft from the Japan Ground Self-Defense Force, with the possibility of F-35B aircraft also being stationed on Yonaguni Island [7]. International Response - The Chinese Ministry of Defense has condemned Japan's military actions, asserting that Taiwan is a domestic issue for China and warning that Japan's military intervention could lead to severe consequences [9].