South Korea to recall Japan envoy
To protest against the Japan's sovereignty claim South Korean President Lee Myung-bak expressed deep disappointment and regret and recalled its envoy to Japan.
South Korea says it is to recall its envoy to Japan in the latest flare-up of tensions over disputed islands.
The foreign ministry said Japan had reasserted its claim to the islands, which are under South Korean control in waters between the Asian neighbours.
The fresh claim to Japanese ownership of the islands - known as Dokdo in Korea and Takeshima in Japan - was reportedly made in a book for teachers.
The islands sit in rich fishing grounds which may also contain gas reserves.
Ambassador Kwon Chul-hyun will return home temporarily after lodging a strong protest with Japan's foreign ministry, the Seoul foreign ministry said.
Japan's ambassador to Seoul, Toshinori Shigeie, would also be summoned, the ministry said.