Liancourt Rocks dispute Japan. In 1954, Japan proposed a reference to the International Court of Justice, which South Korea rejected, believing that the Liancourt Rocks are irrefutably South Korean territories, and thus should not be dealt through diplomatic negotiations or judicial settlement between South Korea and Japan. There are conflicting interpretations about the historical state of sovereignty over the islets. Korean claims are partly based on references to a Korean island called "Usan-do" in various historical records, maps and encyclopedias such as the "Samguk Sagi", "Annals of the Joseon Dynasty", "Dongguk Yeoji Seungnam" (), and "Dongguk munheon bigo" (). According to the Korean
Liancourt Rocks dispute (鬱陵島開拓令) issued in Dec 1881. A first-person account by one of the first settlers since the reclamation program has been presented as one evidence to the fact of the claim. A South Korean scholar claims to have uncovered evidence that Korean fishermen effectively occupied engaged in "whaling" in Liancourt Rocks waters in the 1880s and that sea lions were hunted and sea-lion-derived products were exported to Japan in 1904 prior to the Japanese Cabinet decision of 1905 to incorporate a supposed terra nullius. The Japan–Korea Protocol of 1904 signed between Japan and Korea on February 23, 1904 (Korean 한일의정서, 韓日議定書,