Military Demarcation Line within the 4-km wide
Demilitarized Zone has separated North from South Korea since 1953; periodic
incidents with North Korea in the Yellow Sea over the Northern Limiting Line,
which South Korea claims as a maritime boundary; South Korea and Japan claim
Liancourt Rocks (Tok-do/Take-shima), occupied by South Korea since 1954.
Although Korean government insists that there is no dispute, the world know there is.