日本與臺灣海峽 — 臺灣（中華民國）

摘要

Tokyo switched recognition to Beijing in 1972 and has conducted relations with Taipei since through the Japan–Taiwan Exchange Association and its counterpart, with a large trade and investment relationship, visa-free travel and the closest people-to-people ties either has. The security content is newer: a 2021 statement that peace and stability in the strait matter to Japan's security, the "Taiwan contingency is a Japan contingency" formulation of late 2021, coast guard coordination on the Yonaguni and Senkaku approaches, and, in November 2025, remarks by Japan's prime minister about the conditions under which a Taiwan contingency could constitute a survival-threatening situation for Japan — remarks that produced sustained PRC pressure on Japan and that the module records as an event. On 12 August 2026 the Japanese and Taiwanese navies rehearsed the eastern approaches on the same morning, without coordination either government has acknowledged. Japan hosts the United States forces that any contingency would run through and has no defence arrangement with Taiwan of its own; the relationship is recorded as security cooperation because that is what its content has become, and as unofficial because that is what its form remains.

為何重要

Taiwan's eastern approaches are Japan's south-western ones, and the module's contingency thinking — resupply from the east, the Miyako Strait, the Yonaguni gap — depends on a state that has no treaty with Taipei and every reason to avoid saying what it would do. The relationship is where Japan's ambiguity lives, beside the American one.

相關事件

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  外交 · 政治

• 日本的有事言論與中華人民共和國對日本的持續施壓 2025年11月

  外交 · 政治

• 兩國海軍在同一天上午演練東部接近海域 2026年8月12日

  Maritime · Military

組織

此關係藉以運作的結構。它們並非關係的當事方——當事方是上方的兩個行為者。

地點

本模組已發布的標記。此紀錄本身不增加任何地理精度。

仍然未知的事項

• Whether any defence-to-defence channel exists between the two below the level of retired-officer exchanges is not acknowledged by either government.
• The 12 August 2026 rehearsals are recorded as simultaneous; no coordination has been acknowledged and none is asserted.

證據同樣支持的其他解讀

• The November 2025 remarks may be read as a policy shift or as a parliamentary answer that became one under PRC pressure; the record carries the event and does not decide.

列出這些解讀，是因為該紀錄本身的評估並非其來源所允許的唯一評估 — 而不是對上述評估的保留。