Watch: Singapore to be a possible location for historic Trump-Kim meeting

US President Donald Trump and North Korea's Kim-Jong Un are most probably going to meet in Singapore for the historic summit in June, reports said on Monday. 

The date and location have been settled by the two leaders, Trump had said during the weekend but refrained from giving out any other detail. 

Earlier, a senior US official said Singapore was still high on the list of potential sites for the summit after Trump had suggested the Peace House on DMZ where Kim met South Korean President Moon Jae In last week. 

"We're looking at various countries, including Singapore. And we are also talking about the possibility of the DMZ Peace House/Freedom House," Trump said.

A similar report on the weekend from South Korea's Yonhap news agency also said Singapore was firming as the favoured location for the summit.

Preparations for the much-anticipated talks between the two leaders are gaining more momentum since the Korea summit last month which saw Pyongyang and Seoul promise to pursue the complete denuclearisation of the peninsula and a formal peace treaty to end the 1950-53 Korean War.

North Korea has offered to close its nuclear test site this month -- and invited US experts to verify the move.

Trump, who has declined to comment on whether he has spoken directly to the North Korean leader, called Kim "very open and very straightforward so far".

"Oh yeah, I think the summit's going to happen," he said. They very much want it. We certainly would like to see it... I will say this: If it's not a success... I will respectfully leave. It's very simple."