Military Urges North Korea to Halt Border Fortification as Kim Yo-jong Threatens Retaliation

■ Hard-Line Standoff Over DMZ Landmines North Korea Vows to Boost Tactical Assets Toward the DMZ Pressure Extends From Western to Eastern Front Government Finds Few Options Amid Peace Push Experts Urge Sharing Physical Evidence With the International Community

Politics|
| Updated 2026.09.30. 18:43:37
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By Yoo Ju-heeginger@sedaily.com
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null - Seoul Economic Daily Politics News from South Korea

North Korea has taken a hard line over a landmine explosion in the Demilitarized Zone, leaving the South Korean government with a difficult choice. It wants to hold Pyongyang responsible while preserving the Lee Jae-myung administration's push for peace on the Korean Peninsula, but has few tools to do both.

In a statement released by the Korean Central News Agency on the 30th, titled "The Instigators of the Provocation Must Be Prepared to Pay for Their Self-Staged Farce," Kim Yo-jong, director of the General Affairs Department of the ruling Workers' Party, accused the South of "a disgraceful display of stepping on a mine of unknown origin in a place they do not even know, then blindly casting suspicion and babbling about a violation of the armistice agreement." She also warned that if live fire were used rather than warning shots, the North would "immediately retaliate without mercy."

One passage stood out. "Guidelines for responsive action have been issued to the border defense units," the statement said, adding that the North had "decided to take measures to reinforce tactical counterstrike means in the direction of the DMZ facing the South Korean army's 21st Infantry Division under the 3rd Corps, where provocations are frequent." The 21st Infantry Division of the 3rd Corps is stationed on the eastern front, not the western front where the landmine explosion occurred. It is also the sector where the South Korean military has responded with warning shots to repeated crossings of the Military Demarcation Line by North Korean troops.

Under its "two hostile states" doctrine, the North appears to be trying to protect the "border fortification work" it has pursued along the eastern front since 2024 — installing fences and barriers and laying mines — while pressuring the South. Hong Min, a senior research fellow at the Korea Institute for National Unification, said the reason is that "if warning shots turn into live fire, the construction could be halted." He also noted that the statement, issued under the name of Kim, one of the North's most senior officials, "defined the South Korean government's countermeasures as a pretext to justify political and military provocation," adding that it was "aimed at directly pressuring the political judgment of the presidential office."

Kang Hyun-woo, head of the Joint Chiefs of Staff's operations directorate, announces the military's position on a landmine explosion in the Demilitarized Zone at the Defense Ministry in Seoul's Yongsan district on the 30th. Yonhap News - Seoul Economic Daily Politics News from South Korea
Kang Hyun-woo, head of the Joint Chiefs of Staff's operations directorate, announces the military's position on a landmine explosion in the Demilitarized Zone at the Defense Ministry in Seoul's Yongsan district on the 30th. Yonhap News

Pyongyang's hard-line statement has added to the pressure on the South Korean military's response. There is no clear way to hold the North accountable for the landmine explosion without undermining the current administration's policy of peaceful coexistence on the peninsula. The Joint Chiefs of Staff issued its first statement, saying it "strongly urges North Korea to immediately halt activities that raise tensions on the Korean Peninsula, including 'border fortification,' and to apologize and take responsible measures." The opposition went further. Rep. Na Kyung-won of the People Power Party said the government "should fully resume loudspeaker broadcasts and leaflet campaigns toward the North and immediately conduct a 'Kim Jong-un decapitation drill,' which the Kim Jong-un leadership fears most."

Many say the priority is preventing the situation from worsening, given the prospect of resumed talks between Washington and Pyongyang. Lim Eul-chul, a professor at the Institute for Far Eastern Studies at Kyungnam University, said field protocols must be managed carefully "so that an accidental spark along the Military Demarcation Line does not escalate into a large-scale clash." He proposed sharing objective physical evidence and analytical data from the explosion with the United Nations Command and the international community, and strongly urging the North to reactivate emergency military hotlines to prevent accidental clashes and further escalation.

Original reporting by Yoo Ju-hee for Seoul Economic Daily.

AI-translated from Korean. Quotes from foreign sources are based on Korean-language reports and may not reflect exact original wording.

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