Demilitarized Zone (Korea)

Timeline

27 July 1953
The Korean Demilitarized Zone (DMZ) is the buffer area created by the Korean Armistice Agreement signed on at Panmunjom, which halted active fighting in the…
27 April 2018
It has also hosted diplomatic milestones, such as the Panmunjom Declaration signed by Moon Jae-in and Kim Jong Un, and the 30 June 2019 meeting between Kim…
30 June 2019
It has also hosted diplomatic milestones, such as the 27 April 2018 Panmunjom Declaration signed by Moon Jae-in and Kim Jong Un, and the meeting between Kim…

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In June 2019, US President Donald Trump met North Korean leader Kim Jong Un at the Panmunjom Joint Security Area inside the DMZ, briefly crossing the Military Demarcation Line.

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Timeline

27 July 1953

The Korean Demilitarized Zone (DMZ) is the buffer area created by the Korean Armistice Agreement signed on at Panmunjom, which halted active fighting in the…

27 April 2018

It has also hosted diplomatic milestones, such as the Panmunjom Declaration signed by Moon Jae-in and Kim Jong Un, and the 30 June 2019 meeting between Kim…

30 June 2019

It has also hosted diplomatic milestones, such as the 27 April 2018 Panmunjom Declaration signed by Moon Jae-in and Kim Jong Un, and the meeting between Kim…

Research it like a delegate

The Korean Demilitarized Zone (DMZ) is the buffer area created by the Korean Armistice Agreement signed on 27 July 1953 at Panmunjom, which halted active fighting in the Korean War. The zone runs approximately 250 kilometers across the peninsula, extending about 2 kilometers on either side of the Military Demarcation Line (MDL) — the ceasefire line where the opposing forces stood at the moment of the armistice. It roughly follows, but does not coincide with, the 38th parallel.

The armistice was signed by the Korean People's Army, the Chinese People's Volunteers, and the United Nations Command. The Republic of Korea (South Korea) did not sign. Because no peace treaty has ever been concluded, the two Koreas remain technically at war, and the DMZ functions as the world's most heavily fortified border despite its name.

Key features include:

The Joint Security Area (JSA) at Panmunjom, the only point where forces from both sides stand face-to-face and where inter-Korean talks are typically held.
The Military Armistice Commission and the Neutral Nations Supervisory Commission (originally Sweden, Switzerland, Poland, Czechoslovakia), created to oversee the truce.
A network of South Korean tunnels discovered from the 1970s onward, attributed to North Korean infiltration efforts.

The DMZ has been the site of repeated incidents, including the 1968 Blue House raid, the 1976 axe murder incident, and periodic exchanges of fire. It has also hosted diplomatic milestones, such as the 27 April 2018 Panmunjom Declaration signed by Moon Jae-in and Kim Jong Un, and the 30 June 2019 meeting between Kim Jong Un and Donald Trump, the first time a sitting US president stepped into North Korea.

Paradoxically, decades of restricted human access have made the strip a de facto wildlife refuge, home to endangered species such as the red-crowned crane.

Frequently asked questions

Is the Korean DMZ actually demilitarized?

Only nominally. While heavy weapons inside the 4 km strip are restricted by the armistice, both sides maintain extensive fortifications, minefields, and troop concentrations along its edges, making it one of the most militarized borders in the world.

Why did South Korea not sign the 1953 armistice?

President Syngman Rhee opposed any agreement that left Korea divided and refused to sign. The armistice was signed by the UN Command (on behalf of allied forces including South Korea's), North Korea, and China.

Has the DMZ ever been formally replaced by a peace treaty?

No. Despite declarations such as the 2018 Panmunjom Declaration expressing intent to pursue a peace regime, no treaty has replaced the 1953 armistice, so the Korean War has never been legally ended.

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Frequently asked questions

Is the Korean DMZ actually demilitarized?

Why did South Korea not sign the 1953 armistice?

Has the DMZ ever been formally replaced by a peace treaty?

Go deeper than the definition

Take Demilitarized Zone (Korea) beyond the glossary

Frequently asked questions

Is the Korean DMZ actually demilitarized?

Why did South Korea not sign the 1953 armistice?

Has the DMZ ever been formally replaced by a peace treaty?