Kim Jong-un said he accepted a USA proposal to grant the three detainees an amnesty, adding that his meeting with President Trump would be an "excellent first step" towards improving the situation on the Korean peninsula, according to the North Korean state news agency KCNA.
So far, US officials have sought mostly to spell out what the summit won't be.
Trump spoke to reporters on the tarmac with the former prisoners.
"We've picked a time".
Nevertheless, North Korea has cautioned against Trump's eagerness to credit the ongoing peace efforts to his own "maximum pressure" campaign of sanctions and military posturing. "And I think it'll be very successful". "Singapore has a relationship with both the United States and North Korea".
The decision on where the two leaders will land requires careful consideration and coordination, experts said.
Singapore, with its tight controls on the local press and freedom of speech, also offers a venue likely to be free from potentially tense protests, the Politico report added. It has close diplomatic and defense ties with the US and yet is also familiar ground for North Korea, with which it established diplomatic relations in 1975. But the Southeast Asian nation also took part in the worldwide community's sanctions on Pyongyang for its nuclear and missile provocations.
Singapore and North Korea have a history - the first law firm and fast-food restaurant in Pyongyang were set up by Singaporeans - though relations snagged previous year when Singapore severed trade ties under new United Nations sanctions punishing Pyongyang for its nuclear and missile programmes.
Singapore, sometimes referred to as the "Switzerland of Asia", has good public safety, strong security and many global hotels that can accommodate such a historic meeting.
Where in Singapore will the talks be held? It has been used for key summits in the past.
North Korea consistently tops the list of countries where Christians suffer the most and building off the Trump administration's momentum, human rights group Open Doors USA is pushing for the president to call attention to the 50,000 Christians who have been detained in labor camps. And there are a number of things - provocative actions, for example, from North Korea would not be received well.
Severe starvation in North Korea in the 1990s took its toll on Jo's family.
"There's a danger here of the peace track moving more quickly than the denuclearization track", warned Abraham Denmark, an Asia expert and former senior USA defense official. The other two were arrested after Trump's inauguration last spring amid rising tensions between Washington and Pyongyang.
The fact that three US citizens who had been held in North Korea were released and returned home with Pompeo also seems to have been a key factor for a U.S.
North Korea and South Korea have been separated since 1953 with very limited exchanges, cultural or otherwise. "He, likewise, has been incredibly helpful".
"I am confident that we have a shared understanding of the outcome that the leaders want", Pompeo said.
"We have a month and several days".
Pompeo was the head of the Central Intelligence Agency for 15 months prior to being sworn in as Secretary of State on April 26. It was Pompeo's first since becoming the head of the State Department.
"I thought of why we are separated, and why we are confronting one another", Moon said Thursday at a luncheon at his office at Cheong Wa Dae, having invited a group of South Korean artists to be thanked for their performances in the North Korean capital, Pyongyang, six weeks ago on a two-day tour.
KCNA reported that Kim said that his upcoming summit with Trump "would be a historic meeting for the excellent first step" toward the promotion of a positive situation to develop on the Korean Peninsula and for the "building of a good future". The meeting would be the first between a sitting US president and a leader of North Korea.
The United States intends to make North Korea abandon its ballistic missiles and all of its weapons of mass destruction, including biological and chemical weapons, within a set period.
"Tony Kim, a US citizen in his late 50s briefly taught accounting at Pyongyang University of Science and Technology, or PUST, the only privately run university in the country - funded largely by evangelical Christians in the United States and China, USA Today reports".
At the time this news broke, Pompeo was holding a joint news conference with South Korean Foreign Minister Kang Kyung-wha.