That prompted Pompeo to invite North Korean Foreign Minister Ri Yong Ho to meet in NY next week, where both are scheduled to attend the United Nations General Assembly.
South Korean President Moon Jae-in says he's been told by North Korean leader Kim Jong-un that he wants the U.S. secretary of state to come to Pyongyang for nuclear talks.
David Maxwell, a retired Army colonel who served in South Korea and is now a fellow at the Foundation for Defense of Democracies in Washington, cautioned that Kim's objective is to weaken the U.S.
Building on a growing rapprochement, they agreed to create a facility to hold family reunions at any time, work towards joining up road and rail links, and mount a combined bid for the 2032 Olympics.
U.S. Secretary of State Mike Pompeo said on Wednesday he had invited North Korea's foreign minister to meet in NY next week and other Pyongyang officials to Vienna for talks with nuclear envoy Stephen Biegun.
As the highest mountain on the Korean peninsula at about 2,750 metres above sea level, Mount Paektu is the mythical origin of the Korean people, featuring in South Korea's national anthem and various North Korean propaganda.
Mr Pompeo cited North Korean leader Kim Jong-un's decision to "complete the previously announced dismantlement of the Tongchang-ri site in the presence of U.S. and worldwide inspectors as a step toward the final fully verified denuclearisation of North Korea". Such a declaration would be the first step toward a formal peace treaty, but many in the United States are anxious that it could result in Kim pushing for the removal of USA troops stationed in South Korea to deter the North.
Moon said Kim was also open to inspection of a nuclear test site in the northwest town of Punggye-ri, which he called the North's sole existing facility for underground detonations.
Last year Mr Trump engaged in a war of rhetoric with Mr Kim in which he threatened to destroy North Korea. They then rode vehicles to the mountain on the North Korean-Chinese border.
A complete denuclearization, if it happens, is less likely to hurt the geopolitical order of Northeast Asia despite wishes from China and Russian Federation to cut the number of US forces stationed in South Korea during the dialogue process.
"The North Koreans are in the game to get, not to give", Daniel Russel, a former U.S. senior diplomat for East Asia, told Reuters news agency in July.
"North Korea expressed their willingness to speed up their denuclearization actions if [the United States] takes actions to form a new U.S".
Moon's spokesman, Yoon Young-chan, announced later in the day that the South Korean President would travel to the United States to meet with Trump on September 24. -South Korea joint live-fire military exercise, at a training field near the demilitarized zone separating the two Koreas in Pocheon, South Korea, April 21, 2017. Dismantling it wouldn't reduce North Korea's atomic stockpile, thought to be enough for between 40 and 60 bombs, but it could help cap it.
Kim Jong Un and Moon Jae-in visited the spiritual birthplace of the Korean nation on Thursday for a show of unity after their North-South summit gave new momentum to Pyongyang's negotiations with Washington.
North Korea now faces worldwide sanctions that limit nearly all of its exports and strongly limit imports from its few trading partners. His parents had fled from the North during the war, sailing for three days on the deck of a US ship packed with refugees.
Mr Moon was born in South Korea in 1953 during the Korean War. Lindsey Graham, a Republican from SC, who tweeted that he was concerned the visit would undermine efforts by Secretary of State Mike Pompeo and UN Ambassador Nikki Haley to impose "maximum pressure" on the North.
"I propose we move forward toward the big picture of peace in which the past 70-year-long hostility can be eradicated and we can become one again", he said, prompting rapturous applause. Moon took the bottle and dipped it in the lake, combining water from the Korean Peninsula's most iconic volcanoes.