White House officials are working on a second meeting between Trump and Kim Jong Un

President Donald Trump received a request from North Korean leader Kim Jong Un (both photographed in June) for a continuation of his historic June summit, and planning is under way for this to happen.

President Donald Trump received a request from the North Korean leader, Kim Jong Un, to follow up on his historic June summit, and planning is underway to make this happen.

White House press secretary Sarah Huckabee Sanders said Monday that the details had not been completed.

Trump had told reporters last week that he expected a letter from Kim. Sanders said Trump received the letter, which he described as "very warm, very positive."

President Donald Trump received a request from North Korean leader Kim Jong Un (both photographed in June) for a continuation of his historic June summit, and planning is under way for this to happen.

President Donald Trump received a request from North Korean leader Kim Jong Un (both photographed in June) for a continuation of his historic June summit, and planning is under way for this to happen.

White House press secretary Sarah Huckabee Sanders (pictured) said Monday that the details had not been finalized

White House press secretary Sarah Huckabee Sanders (pictured) said Monday that the details had not been finalized

White House press secretary Sarah Huckabee Sanders (pictured) said Monday that the details had not been finalized

The White House will not release the full letter unless Kim agrees to make it public, she said.

"The main purpose of the letter was to request and seek to schedule another meeting with the president, to which we are open and we are already coordinating," Sanders said at his first press conference in nearly three weeks.

She cited the letter as "additional evidence of progress" in relations between leaders.

Relations between Trump and Kim seem to be flowing since Trump became the first American president to meet with a North Korean leader.

Its historic one-day summit in June in Singapore was held to discuss the denuclearization of the Korean peninsula, and Trump came out of his conversations full of praise for the authoritarian Kim.

Trump recently suspended a visit planned by Secretary of State Mike Pompeo to North Korea, citing the lack of progress towards the elimination of his nuclear arsenal.

In recent days, officials from North and South Korea have met to discuss their own summit that has been scheduled for next week.

In recent days, officials from North and South Korea have met to discuss their own summit that has been scheduled for next week.

In recent days, officials from North and South Korea have met to discuss their own summit that has been scheduled for next week.

n Presidential Blue House, Chung Eui-Yong (L), head of the presidential National Security Office, speaks with North Korean leader Kim Jong-Un (R) during his meeting on September 5, 2018 in Pyongyang, North Korea. A high-level delegation from South Korea left for North Korea on September 5 to discuss arrangements for an inter-Korean summit there this month, as relations cool down between Washington and Pyongyang. (Photo of the presidential house of South Korea through Getty Images)

n Presidential Blue House, Chung Eui-Yong (L), head of the presidential National Security Office, speaks with North Korean leader Kim Jong-Un (R) during his meeting on September 5, 2018 in Pyongyang, North Korea. A high-level delegation from South Korea left for North Korea on September 5 to discuss arrangements for an inter-Korean summit there this month, as relations cool down between Washington and Pyongyang. (Photo of the presidential house of South Korea through Getty Images)

South Korean national security adviser Chung Eui-Yong (left), head of the presidential National Security Office, talks with North Korean leader Kim Jong-Un (right). Both parties will meet again during a summit from September 18 to 20

But on Sunday, the president offered new praise to Kim after a North Korean military parade that, unlike the past parades, downplayed the missiles and nuclear weapons that brought North Korea to the brink of military conflict with the United States. year.

"This is a big and very positive statement from North Korea," Trump tweeted on Sunday about the parade.

Thanks to President Kim. We will both prove that everyone is wrong! There is nothing like the good dialogue of two people who like each other! Much better than before taking office.

Sanders also cited the parade in his comments Monday.

"The recent parade in North Korea, for once, was not about its nuclear arsenal," he said, characterizing the event as "a sign of good faith."

Trump, he said, had achieved a "tremendous success" & # 39; with his policies so far towards North Korea & # 39; and this letter was further proof of the progress in that relationship. & # 39;

Sanders cited the return this year of Americans who had been detained in North Korea, along with North Korea's decision to repatriate dozens of human remains believed to be those of US troops who disappeared during the Korean War.

Trump also cited the fact that North Korea has not tested a ballistic missile or nuclear material in many months.

But although North Korea has destroyed at least parts of its nuclear test site, and says it has dismantled a test site of a missile engine, it has not yet declared the contents of its atomic arsenal or taken concrete steps to end to your weapons program.

Last month, the UN nuclear watchdog said it had "serious concern" over the continuation and development of North Korea's nuclear program.

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