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 overharvesting and fires caused by bombing drills over the islets. A recent investigation, however, identified ten spindle trees aged 100–120 years. Cetaceans such as Minke whales, orcas, and dolphins are known to migrate through these areas. Records of the human impact on the Liancourt Rocks before the late 20th century are scarce, although both Japanese and Koreans claim to have felled trees and killed Japanese sea lions there for many decades. There is a serious concern for pollution in the seas surrounding the Liancourt Rocks. The sewage water treatment system established on the islets has malfunctioned and sewage water produced