While most non-proliferation and test-ban treaties remain, the 1987 intermediate range pact has collapsed and the 2015 Iran deal is on the brink, says Bennett Ramberg

North Korea has praised Donald Trump for saying Washington may pursue an unspecified “new method” in nuclear negotiations with Pyongyang.

Trump has exposed rifts within America’s alliances when it comes to the North Korean nuclear issue. By contrast, Kim Jong-un is building ties with China and Russia, writes Kent Harrington.

North Korean leader Kim Jong Un's most trusted policy adviser has been removed from one of his posts, according to a politician in South Korea.

North Korean leader Kim Jong Un has returned home after travelling two-and-a-half days by train from Vietnam, where his high-stakes nuclear summit with US President Donald Trump ended without any agreement.

They say "Kim and his evil regime are responsible for the death of our son Otto" and for "unimaginable cruelty and inhumanity".

US President Donald Trump and North Korea’s Kim Jong Un cut short their second summit without reaching an agreement.

There is still hope for the Korean pensinsula, but it is dwindling.

Not for the first time, the US government speaks with forked tongue. Mr Trump says North Korea no longer poses a nuclear threat. His secretary of state, Mike Pompeo, disagrees; he says it does.

North Korea has confirmed that leader Kim Jong Un is on a train to Vietnam for his second summit with US President Donald Trump.

Italy's foreign minister has said the country is investigating whether the daughter of a former North Korean diplomat was forcibly returned to Pyongyang as her parents apparently tried to defect.

Kim Jong-un has no intention of giving up his nuclear weapons and sees the upcoming second summit with US President Donald Trump as a chance to cement his country's status as a nuclear weapons state, according to a former North Korean diplomat.

Mr Kim could not be seen but he was presumed to be on board the long train as it crossed on elevated tracks over a busy Beijing street and headed towards eastern China and the border with North Korea.

Doing the Lord's work here...

The murder trial against two women accused of the brazen assassination of the North Korean leader's half-brother is to continue.

North Korean leader Kim Jong-un left his historic Singapore summit with US President Donald Trump last month with a massive political victory in hand, but questions remain how this will help his isolated country in pragmatic terms.

North Korea has described high-level talks with a US delegation led by secretary of state Mike Pompeo as "regrettable", as it accused Washington of trying to unilaterally pressure the country into abandoning its nuclear weapons.

Proclamations about the quasi-monarchical scope of his power speak only of Trump’s panic and growing desperation, writes Elizabeth Drew.

At first glance, it is easy to call the meeting between US president, Donald Trump, and his North Korean counterpart, Kim Jong-un, “historic” and “unprecedented”, writes Virginie Grzelczyk of Aston University.

The Singapore summit is the first ever between a sitting American president and North Korea's leader.

We don’t know what Kim Jong-un is planning, but even getting him to the summit is a positive move by Donald Trump, writes Yoon Young-kwan

The world must have the technical solutions to guarantee the credibility of countries’ promises if denuclearisation is to succeed, write Piet de Klerk and Robert Floyd.

Ahead of the Singapore summit, no one can know what Pyongyang’s ‘real’ intentions are. However, we can look inside the North Korean society for clues, says Katharine HS Moon.

The assertion by the two Korean leaders, Moon Jae-in and Kim Jong Un, after an unexpected meeting on Saturday that North Korea is committed to “complete denuclearisation” and that a North Korea-US summit must be held offers a ray of hope in a dark, sometimes impenetrable situation.

US President Donald Trump has cancelled the June 12 summit with North Korea's Kim Jong Un, citing "tremendous anger and open hostility" in a recent statement.

The North did not invite international inspectors to the ceremony, which limits its value as a serious concession.

North Korea is threatening to cancel the forthcoming summit with the US due to ongoing military exercises between America and South Korea, according to reports.

The two Koreas will hold a high-level meeting tomorrow to discuss setting up military and Red Cross talks aimed at reducing border tension and restarting reunions between families separated by the Korean War.

North Korea said it will hold a "ceremony" for the dismantling of its nuclear test site from May 23-25 in what would be a dramatic but symbolic event to set up leader Kim Jong Un's summit with US President Donald Trump next month.

North Korea’s desire for nuclear weapons cannot be conjured away, so it’s likely Kim will offer Trump assurances that are just a little more encouraging than those he offered to South Korea, writes Christopher R Hill

South Korean President Moon Jae-in has shaken off a suggestion that he receives the Nobel Peace Prize, saying Donald Trump "can take the Nobel prize" as long as the Koreas receive peace in return.

South Korea will remove propaganda-broadcasting loudspeakers from the border with North Korea this week as the rivals move to follow through with their leaders' summit declaration that produced reconciliation steps without a breakthrough in the nuclear standoff.

North Korean leader Kim Jong Un has vowed to shut down the country's nuclear test site in May and open the process to experts and journalists from South Korea and the United States, Seoul's presidential office has said.

US president Donald Trump says he had "a long and very good talk" with the South Korean president after his historic meeting with North Korea's leader.

Just as President Michael D Higgins told a United Nations meeting in New York that Ireland’s peace process could inspire countries to talk rather than go to war, the leaders of North and South Korea announced that they would work together to rid their peninsula of nuclear weapons.

Latest: The two Koreas have agreed to rid their peninsula of nuclear weapons in historic talks between the two leaders.

South Koreans watched as history unfolded and Kim Jong Un, the North Korean leader they normally only see in heavily edited footage, walked across the border and had his every word broadcast live and unfiltered on airwaves across the country.