In a move sure to ignite diplomatic tensions between South Korea and Japan, the Japanese government is set to announce fresh claims to Korea's Dokdo Island on this Tuesday.
Japan's Kyodo News says Tokyo will lay out the final, revised guidelines for middle and high school textbooks which include claims to Korea's easternmost island.
The guidelines will also accuse Korea of illegally occupying Dokdo.
The manuals are often used as reference materials for new editions of school textbooks.
Seoul's foreign ministry has long condemned the move saying Tokyo must drop its unjustified claims.