Liancourt Rocks dispute Liancourt Rocks dispute The Liancourt Rocks dispute is a territorial dispute between South Korea and Japan. Both countries claim sovereignty over the Liancourt Rocks, a group of small islets in the Sea of Japan which are referred to as "Dokdo" () in Korean and in Japanese. North Korea also claims sovereignty of the islands. The Liancourt Rocks have been administered by South Korea since 1954 by the Korea Coast Guard. This action was taken after the United States stated in the Rusk documents that the Japanese claim to the Liancourt Rocks would not be renounced in their peace treaty with
Liancourt Rocks contention in Japan–South Korea relations. There are conflicting interpretations about the historical state of sovereignty over the islets. Japanese researchers of these documents have claimed the various references to Usan-do refer at different times to Jukdo, its neighboring island Ulleungdo, or a non-existent island between Ulleungdo and Korea. The first printed usage of the name "Dokdo" was in a Japanese log book in 1904. Other key points of the dispute involve the legal basis that Japan used to claim the islands in 1905, and the legal basis of South Korea's claim on the islands in 1952. Korean claims are partly