North Korean leader Kim Jong-un's sister warned the United States on Tuesday against having "wrong" expectations of dialog with Pyongyang after Washington once again extended its hand to talks with the regime.

Kim Yo-jong's remarks came after US National Security adviser Jake Sullivan described Kim Jong-un's recent call to be prepared "for both dialog and confrontation" with the United States as an "interesting signal."

"It seems that the US may interpret the situation in such a way as to seek a comfort for itself," said the dictator's sister, North Korean state-run news agency KCNA reported.

"The expectation, which they chose to harbor the wrong way, would plunge them into a greater disappointment," she added. EFE