The discovery that a U.S. governmental body has been using two names on official maps has reignited concern in Korea over the Dokdo Island, which Korea controls.
Japan also claims the island as its territory and has said in the past it would take the matter to the International Court of Justice.
This is a map of the Korean peninsula that was published last Saturday in a report released by the U.S. Congressional Research Service, titled "North Korea: U.S. Relations, Nuclear Diplomacy and Internal Situation."
The second page of the report shows the Korea-controlled Dokdo Island, which are referred to by two names -- Dokdo, the name Korea uses, and Takeshima, the name Japan uses.
The research bureau also used both names on reports released in April and September last year.
And in a report it published last August, it referred to Dokdo as the Liancourt Rocks, with the name Takeshima in front of the name Dokdo.
National Geographic also uses both names for the island on a map on its website.
In related news, the director-general of the Korean foreign ministry's Northeast Asian Affairs Bureau, Lee Sang-deok, told his visiting Japanese counterpart Junichi Ihara on Tuesday that Tokyo's misunderstanding of history and provocative remarks are hampering bilateral ties.
Lee also urged Tokyo to cancel its upcoming Takeshima Day this weekend, designed to promote Japan's claim to Dokdo.
Sohn Jung-in, Arirang News.