Key facts
- North Korea's border fortification work has led to troops crossing the Military Demarcation Line.
- South Korean forces have issued warning broadcasts and fired warning shots in response to border violations.
- Seoul proposed military talks to clarify the MDL and prevent accidental clashes, but Pyongyang has not responded.
South Korea's unification ministry on Thursday urged North Korea to immediately cease actions that could increase the risk of clashes along the border, following threats from Kim Yo-jong, the sister of North Korean leader Kim Jong-un, to resume propaganda loudspeaker broadcasts. The ministry stated that actions violating the Armistice Agreement and heightening tensions must stop, warning against repeating past mistakes where loudspeaker operations caused 'unbearable suffering' for border residents. North Korea has been fortifying its border since April 2024, leading to troops crossing the Military Demarcation Line, which prompted South Korean forces to issue warning broadcasts and fire warning shots. Seoul has proposed military talks to clarify the MDL and prevent accidental clashes, but Pyongyang has not yet responded. The South Korean military and the U.N. Command concluded that recent land mine explosions in the Demilitarized Zone, which injured three South Korean soldiers, were caused by North Korean antipersonnel mines planted south of the MDL.