I was impressed by the news conference with President Moon Jae-in and President Trump. We have a great alliance and it appears to be unchallenged. I appreciated President Trump giving every courtesy to President Moon Jae-in. That was a very friendly and thoughtful expression of our alliance.

It was more than obvious, there was a 2nd meeting with China that President Trump believed changed the tone by North Korea. That is both curious and worrisome. I think it is up to Kim Jong Un to validate or dismiss.

This news conference was very upbeat. It is very hopeful. President Moon Jae-in appears confident about his relationship with Kim Jong Un.

I look forward to more movement in reuniting the North and South, albeit an extended timeline.

May 22, 2018

US President Donald Trump (click here) has said there is a "substantial chance" a historic summit with North Korea's Kim Jong-un next month may be delayed.

He was speaking as he received South Korea's President Moon Jae-in at the White House to discuss the summit.

Mr Moon is "likely tell President Trump what to expect and what not to expect from Kim", South Korean media report.

Last week the North said it might cancel if the US insisted on it giving up nuclear weapons unilaterally....