Informative · South Korea

South Korea just vowed an unprecedented response to North Korean border mines

1 hour ago · 6 October 2026Share

A South Korean sentry stands near the demilitarized zone on the Imjingang river. — Johannes Barre, iGEL ( talk ) · CC BY-SA 3.0

North Korea planted the landmines that wounded three South Korean soldiers at the border last month.

That's the conclusion of a joint investigation by South Korea's military and the United Nations Command.

And now South Korea says its response will be, in its own words, unprecedented in history.

So here's what happened.

Two mines went off inside the Demilitarized Zone on 21 September. Two soldiers were seriously wounded. A third was lightly wounded.

Investigators say North Korea planted those mines about a year before they went off. They were buried around 10 metres south of the Military Demarcation Line. That line is the actual border between North and South Korea.

So how do they know it was North Korea?

South Korea's National Forensic Service tested the fragments. They found TNT, a brown material and a type of resin. Then they matched those pieces to North Korean-made plastic anti-personnel mines recovered before from the Imjin River.

That's the evidence. Same mine, same source.

Lt. Gen. Kwon Dae-won is vice chairman of South Korea's Joint Chiefs of Staff. He announced the conclusion. He says the mine-planting broke the Armistice Agreement — the deal that ended the fighting in the Korean War back in 1953.

He wants a sincere apology for the wounded soldiers, and the mines removed right away.

So that's South Korea's military putting the blame on North Korea, on the record, with the UN body that oversees the armistice standing behind it.

And South Korea has already acted.

Its military cleared the minefield at the blast site a day ago. That's the first mine-clearing operation of its kind ever carried out inside the DMZ buffer zone. And it says it's going to keep clearing North Korean minefields south of the border, unless North Korea removes them itself.

Kang Shin-chul is South Korea's Defence Minister. He called the operation decisive. And unprecedented in history. He said all responsibility lies with North Korea, and that the armed forces will respond decisively to anything that threatens national security.

But here's the thing. Nobody has said what comes next.

Chung Bin-na is a spokesperson for South Korea's Defence Ministry. She was asked directly what further steps are being considered.

The rest of this story is for members.

The border with North Korea. File photo. mroach · CC BY-SA 2.0

She says quote "not ruling out any options" when it comes to additional measures.

She didn't name one. Not military action. Not sanctions. Not a move at the United Nations.

North Korea has denied planting the mines since the day of the blast.

Kim Yo Jong is the sister of North Korean leader Kim Jong Un. She called South Korea's demand for an apology despicable. She's compared this case to a mine incident from more than ten years ago that she says was also staged. And she dismissed a separate South Korean proposal to jointly resurvey the border as a wild dream.

That proposal came from Chung Dong-young, South Korea's Unification Minister. He suggested a few days ago that the two Koreas jointly resurvey the Military Demarcation Line.

And here's part of the problem. Nobody fully agrees where the line even is.

1,292 markers were originally placed along the MDL. Only a fraction survive. South Korean reporting puts the number anywhere between roughly 180 and 250. And South Korea's own defence ministry and the UN Command use reference lines that disagree across around 60 per cent of the border's coordinates.

This has happened before.

In 2015, a similar landmine blast in the DMZ badly wounded two South Korean soldiers. One of them lost both legs. Seoul blamed North Korea then too. North Korea denied it then too. South Korea responded by resuming loudspeaker broadcasts across the border.

And this is bigger than one blast.

South Korea's military says North Korean soldiers crossed the Military Demarcation Line 17 times last year. And 50 times so far this year, during fortification work near the border. South Korean troops have fired warning shots in response.

Seoul proposed border talks back in November last year. North Korea never answered.

So this is the latest round of a border dispute that's been building for almost a year now. Between two countries that are still technically at war more than seventy years after the fighting stopped.

South Korea has the forensic evidence. It has the UN Command's backing. And it has promised an unprecedented response.

North Korea has refused to apologise. Refused to negotiate. Refused to even agree on where the border is.

And neither side has said what happens if nothing moves.

Comments

None yet

Already a member? Log in.

South Korea just vowed an unprecedented response to North Korean border mines

Comments

Related reporting

North Korea just planted mines across the Korean border and fired a missile back

Ukraine just set Moscow's biggest oil depot on fire

A US Navy helicopter just vanished near Yemen's blockaded coast