While Japan confirmed no breach of territorial waters, the incident follows increased military activity in the region, including Chinese naval operations.View on euronews

Japan's military said it had dispatched a surveillance plane and a navy ship on Tuesday after spotting a Russian submarine off the coast of a southwestern island near Taiwan. The Russian Kilo-class submarine was sighted just 50 kilometers (31 miles) south of Yonaguni Island,

Japan dispatched a surveillance plane and a navy ship on Tuesday after spotting a Russian submarine off the coast of a southwestern island near Taiwan, Japanese Joint Staff officials said in a statement.