DMZ, Where Trump met Kim Jong Un, Is A Vestige Of Cold War

President Donald Trump meets with North Korean leader Kim Jong Un at the border village of Panmunjom in the Demilitarized Zone, South Korea, Sunday, 30 June, 2019. 

(Photo: AP Photo/Susan Walsh)

The Demilitarized Zone, where President Donald Trump met North Korean leader Kim Jong Un on Sunday, 30 June, may be the most heavily fortified strip of land in the world and serves as an uneasy and occasionally bloody borderline between the two Koreas.

There isn't much demilitarized about it: A minefield laced with barbed wire, it's guarded by combat-ready troops on both sides and has been the site of numerous, sometimes deadly gunbattles and skirmishes. US presidents and other top officials have often travelled to the DMZ to reaffirm their commitment to the defense of ally South Korea in times of hostility with North Korea.

The venue of the third Trump-Kim meeting was the Korean border village of Panmunjom. Last year, Kim stepped over into the southern side of Panmunjom for a summit with South Korean President Moon Jae-in, becoming the first North Korean leader to set foot on South Korean land.

On Sunday, Trump became the first US president to cross over the demarcation line into the North Korean territory.

Here's a look at a border that was once again a part of history:

The Origin Of The DMZ

The DMZ, which runs across the Korean Peninsula, is 248 kilometers (154 miles) long and 4 kilometers (2.5 miles) wide. Created as a buffer at the close of the 1950-53 Korean War, it's jointly overseen by the American-led UN Command and North Korea.

Hundreds of thousands of North and South Korean troops are now deployed along the DMZ, which is littered with an estimated 2 million mines, tank traps, razor wire fences and guard posts.

In this 15 November, 2018, file photo, smoke from an explosion rises as part of the dismantling of a South Korean guard post in the Demilitarized Zone dividing the two Koreas in Cheorwon, South Korea, as a North Korean guard post sits high in the upper left.(Photo: Jung Yeon-je/Pool Photo via AP, File)

It's extremely rare for anyone to cross the DMZ in unauthorized areas. More than 30,000 North Koreans have escaped to South Korea for political and economic reasons since the war's end, but mostly via the North's long, porous border with China.

In this 14 June, 2019, file photo, hikers and journalists walk along the DMZ Peace Trail in the demilitarized zone in Goseong, South Korea.(Photo: AP Photo/Ahn Young-joon, File)

Violence was more common in the Cold War, but a 2015 land mine blast blamed on North Korea maimed two South Korean soldiers and pushed the rival Koreas to the brink of an armed conflict.

As relations improved last year, Kim and Moon agreed on several deals aimed at reducing animosity at the border. They removed mines from certain areas, dismantled some of their guard posts and halted frontline live-fire exercises. Experts say tensions can easily return if diplomacy eventually fails to end the North Korean nuclear stalemate.

Panmunjom

Inside the DMZ, Panmunjom has been the venue for past high-level talks. It's somewhat safer than other areas, and it is just an hour's drive from Seoul. Most past DMZ visits by US presidents and other officials happened at Panmunjom and nearby areas.

North and South Korean troops stand only several meters (yards) away from each other there. They once carried pistols, but since last year's deals they aren't armed.

In this 18 August, 1976, file photo, North Korean soldiers attack United Nations Command personnel wearing helmets at the truce village of Panmunjom, South Korea.(Photo: Yonhap via AP, File)

Panmunjom is also where an armistice was signed to stop the Korean War. That armistice has yet to be replaced with a peace treaty, leaving the Korean Peninsula in a technical state of war. About 28,500 American troops are still stationed in South Korea.

Panmunjom is 52 kilometers (32 miles) north of Seoul and 147 kilometers (91 miles) south of Pyongyang.

Since the armistice, more than 830 rounds of talks have been held in various Panmunjom conference rooms.

Panmunjom is where, during his first summit with Moon in April 2018, Kim stepped across the concrete slabs that form the military demarcation line and the leaders shook hands. Kim then took Moon's hand and led him back across the borderline into the North, where they posed for a photo together before returning to the South for a summit.

In this 27 April, 2018, file photo, North Korean leader Kim Jong Un, left, prepares to shake hands with South Korean President Moon Jae-in over the military demarcation line at the border village of Panmunjom in Demilitarized Zone. (Photo: Korea Summit Press Pool via AP, File)

Before that, the most famous incident at Panmunjom happened in 1976, when ax-wielding North Korean soldiers killed two US officers sent out to trim a tree that obstructed the view from a checkpoint. Washington sent nuclear-capable bombers toward the DMZ in response. Animosities eased after then leader Kim Il Sung, the grandfather of Kim Jong Un, expressed regret over the incident.

In 2017, North Korean soldiers sprayed bullets at a colleague who was making a dash for the border. He survived and now lives in South Korea.

Past Presidential Visits

In 1993, President Bill Clinton visited Panmunjom when the North Korean nuclear crisis first flared. In 2002, President George W. Bush visited the DMZ a few weeks after he labeled North Korea part of an "axis of evil."

In this 11 July, 1993, file photo, US President Bill Clinton takes the lens caps off a pair of binoculars at Camp Casey from the Ouellette guard post in the Demilitarized Zone (DMZ).(Photo: AP Photo/Greg Gibson, File)

US President George W. Bush, right, looks out at North Korea from Observation Point Ouellette in the Demilitarized Zone, the tense military border between the two Koreas, in Panmunjom, Korea, on 20 February, 2002.  (Photo: AP Photo/J. Scott Applewhite, File)

In March 2012, Kim came down to Panmunjom and met front-line North Korean troops in his first known visit to the area since taking power in late 2011. He gave the troops rifles and machine guns as souvenirs and ordered them to maintain "maximum alertness," according to state media.

Days after Kim's Panmunjom trip and ahead of a planned North Korean long-range rocket launch, President Barack Obama visited a front-line US military camp just south of the DMZ and told American troops they are protectors of "freedom's frontier."

In this 25 March, 2012, file photo, then US President Barack Obama, second left, looks through binoculars to see North Korea from Observation Post Ouellette in the Demilitarized Zone.(Photo: AP Photo/Susan Walsh, File)

In November 2017, Trump planned to visit the DMZ with Moon to underscore his stance on North Korea's nuclear program, but his plans were thwarted by heavy fog that prevented his helicopter from landing at the border.

(Published in arrangement with Associated Press)