Here are the main events about Dokdo. In 512, General Yi Sa-bu of the Silla Dynasty conquered Usanguk (Dokdo)(Samguksagi, History of the Three Kingdoms, 1145) In 1693, Japan fishermen kept crossing the border illegally. To stop this, An Yong-bok complained to Japan and received Tottorihan¡¯s reply to an inquiry of the Edo Shogunate (Dec. 25, 1695), which says "Neither Takeshima (Ulleungdo) nor Matsushima (Dokdo) belongs to the Tottori-han." In 1877, through the Dajokan Order, Japan¡¯'s Meiji government officially confirmed that ¡°"Japan has nothing to do with Ulleungdo and one other island [Dokdo]¡±". After liberation, Korea was able to get lands back from Japan by Cairo Declaration and Potsdam Declaration.
In short, we should call the island Dokdo because the island belongs to Korea and Koreans call this Island Dokdo.
The name ¡°Dokdo¡± has long been used by the Korean people. This is the legitimate name that should be used internationally. Against this back drop, we would like to request you to use the name "Dokdo" when you refer to the island at issue.