Three Americans are on the way home after months in North Korean detention.
Donald Trump says they have been released as a sign of goodwill, ahead of his meeting with Kim Jong-un.
The US president is promising to personally meet them when they arrive back on American soil tonight.
1News US correspondent Rebecca Wright told Kate Hawkesby the trio are in good spirits and good health.
"That is a relief because it was a concern after Otto Warmbier was released in a coma and died shortly after, last year."
The US is walking a diplomatic tightrope with North Korea, ahead ofthe historic meeting .
North Korea has released the three American detainees overnight as a measure of goodwill, But is also warning the White House against words and actions which could reignite tensions and jeopardise the talks.
Wright says if the meeting does go ahead, it's likely to happen in Singapore.
"They have an option to spend two days talking, so they are certainly setting themselves up to give them enough time and space to really sort of go for it in that meeting."
LISTEN ABOVE AS REBECCA WRIGHT SPEAKS TO KATE HAWKESBY