A North Korean soldier stands guard on the northern side of the Military Demarcation Line in the Demilitarized Zone on Nov. 19, 2025. (Brendan Trembath/U.N. Command)
North Korea erecting fences inside the Demilitarized Zone does not violate the Korean Armistice unless it introduces offensive military capabilities, according to a senior official with United Nations Command.
The U.N. Command official said the North Korean military’s ongoing construction projects appear defensive in nature and have not disturbed the “equilibrium” established within the DMZ.
The official spoke on condition of anonymity during a press briefing by phone with another South Korean journalist.
On Thursday, the JoongAng Ilbo newspaper reported that North Korea has erected barbed-wire fences within 262 feet of the line dividing the two Koreas and has cleared grounds to lay land mines.
The report also noted South Korea’s Ministry of National Defense and the U.N. Command disagree on whether such conduct violates the armistice agreement.
That agreement, signed on July 27, 1953, by representatives of the command, North Korea and China, ended active fighting in the Korean War and established the DMZ and the Military Demarcation Line. The DMZ is a 2.48-mile-wide buffer zone, extending 1.24 miles on each side of the demarcation line to prevent incidents that could lead to a resumption of hostilities.
Pyongyang’s construction of obstacles near the demarcation line is a “clear violation” of the armistice, Chung Binna, a Defense Ministry spokeswoman, said in a press briefing on Monday.
The armistice established the DMZ as a buffer zone to prevent incidents, which is why the ministry views these construction projects as a violation, she explained.
Chung said the South Korean military is closely monitoring movements near the line and maintaining military readiness.
However, the senior U.N. Command official said North Korea notified the command of its plans last year to begin fencing construction and road repair projects “in alignment with established procedures.”
The command subsequently shared that notification with South Korean authorities “to maintain discipline on our side of the military demarcation line,” the official said.
The command evaluates activities within the DMZ on an apolitical and military-to-military basis, focusing on whether they are defensive or offensive in nature, he said.
The command has not detected North Korea bringing heavy weapons or drone capabilities into the DMZ, he said.
“What we are seeing is construction, granted at a heavier rate,” he added.
“As long as they [North Korea] maintain their separation, as long as they aren’t instituting unauthorized weapon systems or creating offensive capability inside of the DMZ, we maintain a monitor and assess pattern,” he said. “Anything else would be speculation.”
The official said South Korea has over 36 construction projects, including road building and vegetation clearing, underway in the southern half of the DMZ.
The official said North Korea laying land mines would constitute an armistice violation if it placed mines along the demarcation line.
If North Korea is placing mines on its side of the border to protect its area of operations from either infiltration or exfiltration, that is “defensive in nature,” he explained.
The Ministry of National Defense did not respond to a text message Wednesday seeking comment on the command’s assessment.
