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The Japanese Ministry of Defense confirmed a Russian Navy Vishnya-class intelligence ship operated near Yonaguni and Miyako Islands from January 13 to 15, 2023. The Maritime Self-Defense Force used the destroyer Ikazuchi and P-1 and P-3C patrol aircraft for monitoring.

The ship, hull number 535, transited through the contiguous zones around the islands into the Pacific. Japan has noted increased Russian and Chinese naval activity in the region, prompting heightened alertness among its maritime and air assets. This incident reflects ongoing regional tensions and Japan's efforts to enhance maritime domain awareness and defense capabilities.