But, despite the optimism of that moment, all efforts to limit North Korea's nuclear program have so far failed.
To counter Kim's smile diplomacy and avoid his trap, the Trump administration should take four lessons from prior negotiations with North Korea, Libya and Iran.
He described his conversations with Kim as "warm" and said both had tried "our best to make sure that we were communicating clearly and had shared understanding about what our mutual objectives were". He was the second sitting secretary of state to visit the reclusive nation and the highest-ranking US official to meet the young North Korean leader.
Mr Pompeo returned from Pyongyang on Thursday with three American detainees who had been released by North Korea.
"I think it's going to be a very big success", the president said last week.
In spite of an easing of tensions and a return to dialogue in recent months, North Korea has given no indication that it is willing to go beyond statements of broad support for the concept of denuclearisation. "I really believe that Jon", Trump said.
Following the Moon-Kim summit, Moon's office said Kim was willing to disclose the process to worldwide experts, but the North's statement on Saturday did not include any mention about allowing experts on the site.
The talks, which are expected to last a day, are set to focus on North Korea's rapidly advancing nuclear and ballistic weapons programs.
In December Kim declared his nuclear force as complete following the country's most powerful nuclear test to date in September and also three flight tests of intercontinental ballistic missiles created to reach the U.S. mainland.
If Trump can not get the big breakthrough he wants in denuclearization, he may try instead to negotiate a treaty to establish diplomatic relations with the North and formally end the 1950-53 Korean War, which was halted by an armistice.
Washington: Remains of missing girl found after 9 years
Baum's mother, Melissa Baum, helped by contributing photos of herself and Lindsey's father when they were roughly the same age. The case gained national attention and was featured on the cover of People magazine and on "The Oprah Winfrey Show" in 2009.
Mothers Day 2018; A day to Love your mother once again
Most florists do deliveries, so phone a couple of weeks in advance to make sure they will be open or delivering on Mother's Day . This is a global day usually celebrated on second Sunday of May every year in Nigeria and some other countries like the USA.