South Korea's president says US President Donald Trump told him he has a "very friendly view" of North Korean leader Kim Jong Un and wants to grant his wishes if he denuclearises.
North Korea has sought security guarantees from the US and relief from international sanctions.
President Moon Jae-in's office quoted Moon as saying that Trump asked him to convey those messages to the North Korean leader if he visits Seoul this year as he promised. Moon spoke to reporters on Saturday aboard his presidential plane en route to New Zealand from Argentina, where he met Trump on the sidelines of a Group of 20 Nations summit.