The leaders of North and South Korea have agreed to work to rid the peninsula of nuclear weapons after holding a historic summit.
The announcement was made by the North’s Kim Jong-un and Moon Jae-in of South Korea after talks at the border.
The two also agreed to push towards turning the armistice that ended the Korean War in 1953 into a peace treaty this year.
It comes just months after warlike rhetoric from North Korea.
Details of how denuclearisation would be achieved were not made clear and many analysts remain skeptical about the North’s apparent enthusiasm for engagement.
An issue for the North is the security guarantee extended by the US, a nuclear power, to South Korea and Japan and its military presence in both countries.
Previous inter-Korean agreements have included similar pledges, but were later abandoned after the North resorted to nuclear and missile tests and the South elected more conservative presidents.
Following Friday’s summit, Mr Kim said the two leaders had agreed to work to prevent a repeat of the region’s “unfortunate history” in which progress had “fizzled out”.
“There may be backlash, hardship and frustration,” he said, adding: “A victory cannot be achieved without pain.”
The commitment to denuclearization does not explicitly refer to North Korea halting its nuclear activities, but rather the aim of “a nuclear-free Korean peninsula”.
The two countries have also “agreed to actively seek the support and co-operation of the international community” to reach this goal, the joint statement says.
China later praised the political determination and courage of both leaders. A statement from its foreign ministry said it hoped the momentum could be maintained.
US President Donald Trump also welcomed the news, tweeting that “good things are happening”.
How the summit unfolded
The leaders were met on Friday by an honour guard in traditional costume on the South Korean side. The pair walked to the Peace House in Panmunjom, a military compound in the DMZ between the two countries.
Mr Kim then invited the South Korean president to step briefly across the demarcation line into North Korea, before the pair stepped back into South Korea – all the while holding hands.
It was an apparently unscripted moment during a highly choreographed sequence of events.
The meeting is aimed at ending the decades-long conflict on the peninsula
When the first session ended, the pair separated for lunch and Mr Kim returned to the North in a heavily guarded black limousine.
When he returned in the afternoon, the two leaders took part in a ceremony consisting of the planting of a pine tree using soil and water from both countries.
The pair shovelled soil on the roots of the tree and unveiled a stone marker featuring their names, official titles and a message that read: “Planting peace and prosperity.”
Following their joint statement, the leaders attended a banquet on the South’s side where Mr Kim was expected to be served the Swiss potato dish rösti – a nod to his time studying in Switzerland – along with the North’s signature dish of cold noodles, and a North Korean liquor.
Kim’s sister and North Korea’s secret weapon
Mr Kim arrived for the symbolic discussions on Friday accompanied by nine officials, including his powerful and influential sister Kim Yo-jong.
Why was this summit so important?
The meeting – the first between Korean leaders in more than a decade – is a step toward possible peace on the peninsula and marks the first summit of its kind for Mr Kim.
It is the first time Korean leaders have met in more than a decade
At the Peace House in Panmunjom ahead of the talks, Mr Kim said he felt that he and Mr Moon had “fired a flare at the starting point… the moment of writing a new history vis-à-vis peace, prosperity and North-South relations”.
The White House also expressed hope that the talks would achieve progress towards peace ahead a proposed meeting between Mr Kim and Mr Trump in the coming weeks – an unprecedented move.
How did we get here?
Few had predicted a development like this, as North Korea continued its nuclear and missile tests and stepped up its rhetoric through 2016 and 2017.
The rapprochement began in January when Mr Kim suggested he was “open to dialogue” with South Korea.
The following month the two countries marched under one flag at the opening ceremony of the Winter Olympics.
Did the Winter Olympics repair relations?
Many South Koreans were overcome with emotion as they saw the historic moment on TV
While Seoul has warned that a deal to rid Pyongyang of its nuclear weapons would be “difficult”, Mr Kim announced last week that he was suspending nuclear tests.
Chinese researchers have indicated that North Korea’s nuclear test site may be unusable after a rock collapse.
Mr Kim’s new appetite for diplomacy led to the key turning point, which was a meeting with senior South Korean officials in March, and after that came the announcement that Mr Kim would also meet Mr Trump.