North Korea could become one of the world's "great economic powers" if it relinquishes its nuclear weapons, US President Donald Trump has said.
Writing on Twitter, Mr Trump said the nation had "more potential for rapid growth than any other".
His comments came hours after his secretary of state Mike Pompeo said Pyongyang remains a nuclear threat.
Mr Trump will meet North Korean leader Kim Jong-un for the second time on the 27-28 February in Hanoi, Vietnam.
"We both expect a continuation of the progress made at first summit in Singapore," Mr Trump tweeted, referencing the meeting between the two leaders in Singapore last June.
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