North Korea’s DMZ landmines sabotage the South’s peace push

Landmines laid by North Korea along its border with South Korea have exposed the growing distance between the two nations over their de facto land boundary, following an explosion that wounded three South Korean soldiers last month. Seoul accuses Pyongyang of causing the blast near the military demarcation line (MDL) on September 21, which resulted in one soldier losing a foot.

The Foreign Ministry has prepared a response to demand an apology from North Korea and urged them to hold talks on the poorly signposted MDL. Military personnel from both sides are strictly forbidden from crossing the MDL under their 1953 armistice agreement. The 250km-long demilitarised zone (DMZ) dividing the Korean peninsula serves as the effective land border, but it is sparsely marked with few of the original markers still in place.

Forensic evidence from the September 21 incident points to North Korean responsibility, with explosive residue and mine fragments found at the site. Seoul has deployed up to 7,000 personnel daily this year to fortify the border, with fences, minefields, and road construction expected to be completed within two years. North Korean troops have crossed the MDL over 50 times this year, often pushing as far as 20 meters south of the line.

South Korean officials have called for reverification of the MDL's location, rejecting calls for anti-Pyongyang broadcasts to resume. The differing interpretations of the MDL's location between North and South Korea hinder dialogue, with Pyongyang viewing the line as an impenetrable border and South Korea seeing it as poorly marked and needing redrawn.

The unresolved maritime boundary off the western coast also poses a potential source of conflict if North Korea extends its fortification efforts into the sea.