S. Korea to send letter to UNSC urging N. Korea to take responsibility for DMZ mine blast

Q: What will South Korea ask the U.N. Security Council to do about the North Korean DMZ mine blast?

The letter will ask North Korea to apologize and take responsible action over the mines, which Seoul says violated the Armistice Agreement. It will also call for dialogue to prevent further escalation and restore trust, and seek to draw attention to what Seoul describes as Pyongyang’s portrayal of South Korean military activity along the MDL as provocation.

Q: What Security Council options did South Korea consider over the DMZ mine blast?

Foreign Minister Cho Hyun said Seoul was reviewing four options: sending a letter to the council president, seeking a presidential statement expressing the council’s position, pursuing a Security Council resolution or taking no action at the council level.

Q: Could South Korea impose unilateral sanctions over North Korea’s DMZ mine blast?

A senior foreign ministry official said the government has not ruled out unilateral sanctions if North Korea does not respond to the letter. Seoul will consider their effectiveness and practical benefits before deciding on further steps.

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Summary

South Korea plans to send a letter to the U.N. Security Council president on Thursday, New York time, urging North Korea to apologize for the Sept. 21 DMZ mine blasts and take responsibility for violating the Korean War Armistice Agreement. The blasts, which South Korea’s military attributed to North Korean mines planted south of the Military Demarcation Line, injured three South Korean soldiers, two seriously. Seoul says the letter will also call for dialogue to prevent escalation and restore trust. North Korea has denied responsibility and warned of retaliation.

Key Facts

The letter will be sent under the name of South Korea’s ambassador to the United Nations.
South Korea plans to coordinate with Greece, which holds the rotating presidency of the Security Council, to have the letter circulated to council members promptly.
Foreign Minister Cho Hyun previously outlined four possible Security Council responses: sending a letter, seeking a presidential statement, pursuing a resolution or taking no action at the council level.
A senior foreign ministry official said Seoul has not ruled out unilateral sanctions if North Korea does not respond, but will assess their effectiveness and practical benefits before deciding on further steps.

By Yonhap

Published Oct 22, 2026 3:13 pm KST
Updated Oct 22, 2026 4:32 pm KST

A landmine warning sign is seen along a trail running alongside minefields in a restricted area adjacent to the Demilitarized Zone (DMZ) between South Korea and North Korea, in Yanggu, Gangwon Province. AFP-Yonhap

South Korea plans to send a letter to the president of the U.N. Security Council (UNSC) calling on North Korea to apologize for last month's land mine blast and take responsibility for its violation of the Korean War Armistice Agreement, the foreign ministry said Thursday.

The South Korean military concluded the Sept. 21 blasts in the Demilitarized Zone (DMZ) were caused by North Korean mines planted south of the Military Demarcation Line (MDL). The incidents injured three South Korean soldiers, two of them seriously.

"The letter will explain that the blast was caused by land mines planted by North Korean troops in violation of the Armistice Agreement, demand an apology and responsible action from Pyongyang, and call for dialogue to prevent further escalation and restore trust," ministry spokesperson Park Doo-soon said during a regular press briefing.

The letter will also seek to "draw attention to Pyongyang's recent attempts to characterize South Korean troops' legitimate military activities along the MDL as provocations and shift responsibility for rising tensions onto South Korea," Park added.

The letter, to be sent under the name of South Korea's ambassador to the U.N., is expected to be sent Thursday (New York time), he said.

Such letters are typically circulated to Security Council members within several days of being received by the council president and subsequently posted on the UNSC website.

North Korea has denied responsibility for the incident and warned of retaliation if South Korea takes corresponding action.

The government will coordinate with Greece, which holds the rotating presidency of the UNSC, "to ensure the letter is circulated to council members as soon as possible after it is sent," a senior ministry official told reporters.

During a parliamentary audit earlier this month, Foreign Minister Cho Hyun said Seoul was reviewing "various diplomatic responses" to the mine blast while seeking to prevent unnecessary escalation.

Cho outlined four possible options for Seoul's response at the UNSC: sending a letter to the council president, seeking a presidential statement expressing the council's position on the incident, pursuing a UNSC resolution or taking no action at the council level.

When asked about possible additional measures, the ministry official said the government has not ruled out unilateral sanctions if North Korea does not respond to the letter.

"Seoul will consider their effectiveness and practical benefits before deciding on further steps," he added.

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