The White House received a message from Kim Jong-un from North Korea inviting President Trump to visit Pyongyang, which may be the first overture before a potential fourth official visit.
The White House and the State Department did not immediately respond to Reuters to confirm the report in the Joongang Ilbo newspaper in South Korea. The letter is reported to be ahead of the country's last short-range launch a week ago.
The recent shaking of the White House may be reflected in these discussions.
North Korea has long expressed disdain for John Bolton, Trump's former national security adviser. , Pyongyang called it a "warming" and "defective human product" that glorified regime change and preventive strikes.
Last week, Trump went so far as to accuse Bolton of scaring Kim out of the talks, mentioning last year's "Libyan model" when discussing what a North Korean denuclearization deal might look like.
Moammar Gaddafi in Libya was shot down and killed in 201
Trump said Kim wanted "nothing to do with John Bolton." And the president said he did not accuse the North Korean leader of being upset.
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Still, "changing an advisor is unlikely to dramatically change the course of US policy," said Ewha Womans University professor at Leif-Erik Isili.
The Associated Press contributed to this report