President Donald Trump has published a letter sent to him by North Korean supreme leader Kim Jong Un, in which the young ruler praises his USA counterpart but does not mention any commitments to abandon nuclear weapons.
Earlier Thursday, a diplomatic source here said the USA and North Korea were still in talks to set a date for working-level dialogue over the repatriation of remains of American troops.
While visiting Pyongyang last week, Mr Pompeo said that a Pentagon team would meet with the North's officials in or around Panmunjon - the truce village on the border between North and South Korea.
Kim also voices hope "the invariable trust and confidence in Your Excellency Mr. President will be further strengthened in the future process of taking practical actions".
Trump has expressed an eagerness to tout the recovery of the war dead, telling Fox News that Kim was "giving us back the remains of probably 7,500 soldiers".
"We have to see the USA defense ministry's response, but the UNC reportedly gave a positive signal to North Korea, so there is a good chance of the talks taking place on Sunday", the source said.More news: Adam 'Pacman' Jones Fights & Knocks Out Airport Employee
A spokesman for U.S. Forces Korea referred questions Thursday to the Department of Defense in Washington.
"We had expected that the USA side would offer constructive measures that would help build trust based on the spirit of the leaders' summit. we were also thinking about providing reciprocal measures", Pyongyang's Foreign Ministry said in a statement, according to The Associated Press.
That statement said North Korea would "work toward complete denuclearization of the Korean Peninsula", but offered not details on when or how Pyongyang would relinquish its program. The meeting was about returning the remains of American soldiers from the Korean War.
Kim made that commitment when he met Mr Trump in Singapore last month.
During an official visit to Britain, Trump posted images of the Korean-language letter from Kim and its English translation. "Great progress being made".
Trump also announced that the USA would suspend "war games" with South Korea.
Speaking afterwards in Tokyo, Pompeo insisted the talks were making progress and were being conducted in "good faith". Trump added in his tweet.