China Coast Guard Patrols in Japan's EEZ Escalate Maritime Tensions
On June 9, 2026, a China Coast Guard (CCG) vessel was detected navigating within Japan's exclusive economic zone (EEZ) south of Yonaguni Island, Okinawa Prefecture. Japan's Chief Cabinet Secretary Kihara Minoru announced the incident, stating the CCG vessel responded that it was conducting a 'routine patrol' and asserting Chinese jurisdiction. China's Foreign Ministry spokesperson Lin Jian confirmed the patrols were lawful and criticized Japan-Philippines maritime delimitation talks as violating UNCLOS and China's rights. The article analyzes the legal complexities under UNCLOS, noting that while Chinese marine scientific research in Japan's EEZ without consent violates international law, CCG patrols may not immediately be violations due to freedom of navigation rights. However, such patrols must have 'due regard' for coastal state rights. The incident marks a shift from China merely asserting claims to conducting concrete activities in disputed waters, similar to its South China Sea strategy.
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