Takeshima(竹島) is a group of islands in Sea of Japan. It is also called “Dokdo” or “Tokto” in Korean. In third party countries, it is called “Liancourt Rocks”.
In 1904, the Japanese government staked its claim to Takeshima and started to occupy it. It was a prior occupation under international law, because no other countries occupied Takeshima as of 1904. In addition, Korea was not a Japanese colony as of 1904. Therefore, the Japanese claim to Takeshima was legal and proper.
However, in 1952, the South Korean government staked its claim to Takeshima and started to occupy it. At the time, the President of South Korea was Syngman Rhee. South Korean calls Takeshima, “Dokdo” or “Tokto”. The Japanese government could not reclaim Takeshima because the Japanese military had been dissolved by SCAP as of 1952. South Korea caught Japan off guard.
South Korean occupation of Takeshima(Dokdo) is illegal and improper. However, the South Korean government does not intend to retrocede Takeshima(Dokdo) to Japan.