North Korea threw the June 12 summit into doubt on Wednesday, saying it might not attend if Washington continues to demand that it unilaterally abandon its nuclear weapons.
At his meeting with Xi, the leader of the North Korean delegation, Pak Thae Song, said he had been entrusted with consolidating recent agreements between Kim and Xi as well as studying China's model of economic development and "reform and opening".
"We have no choice but to stop the North-South high-level talk scheduled for the 16th under the ugly circumstances where there is indiscreet North-invading war fuss and fight rampage", KCNA said.
Citing deputy minister of foreign affairs Kim Kye Gwan, the news agency also said the fate of the US-North Korea summit, as well as bilateral relations, "would be clear" if Washington speaks of a Libya-style denuclearisation for the North.
"The president is ready if the meeting takes place".
Trump said: "We haven't been notified at all, we'll have to see". -South Korean military drills and the Trump administration's stance on North Korea's nuclear program are an obvious negotiating ploy, according to Republican Senator Thom Tillis.
In contrast to previous years, the USA and South Korea have taken a low-key approach to their joint military exercises and limited their duration and scope during the apparent thaw with North Korea, which is expected to lead to the summit between Trump and Kim on June 12 in Singapore.
Foreign ministry spokesman Lu Kang said the two countries should ensure the meeting runs as planned and yields "substantial outcomes".
U.S. B-52 bombers, however, may not participate in a USA -based air drill, according to a Yonhap News report.
State Department officials said they are planning on the basis that the summit will go ahead in Singapore next month.
He specifically criticised US National Security Adviser John Bolton, who has called for North Korea to quickly give up its nuclear arsenal in a deal that would mirror Libya's abandonment of its program for weapons of mass destruction. We hope the North will refrain from going back to its old tactics of agreeing to do something and then undoing it. In South Korea, the bolt from the blue did not seem to dent popular optimism. But so far, the North has given no public indication of what it is offering, beyond a broad commitment to denuclearization of the "Korean Peninsula".
State Department Spokesperson Heather Nauert said Kim had previously indicated he understood the need and objective of the U.S. continuing its long-planned joint exercises with South Korea.
The North has said it won't return to talks with Seoul due to the exercises.
The exercises were "not provocative" and would continue, she added.
-South Korean military exercises now taking place.