"Tok Island is inalienable part of Korea both in name and reality," said the commentary, using the North Korean form of the name Dokdo. "Even key historical data and maps of Japan, to say nothing of all historical documents of Korea, specify Tok Island as Korea's. None of them found to have marked the islet as Japan's."

"If the Japanese reactionaries keep going reckless for overseas territorial expansion, defying repeated protest and rejection by the DPRK and other countries around it, they will face earlier isolation and self-ruin," it added, referring to North Korea by its official name, the Democratic People's Republic of Korea. (Yonhap)