The most contrarian nugget of Carlin's analysis was his assertion that the statement, and North Korean domestic media's coverage of the visit, suggests progress was made.
Hours after Trump's tweet, State Department spokeswoman Heather Nauert said North Korea offered to meet a US delegation on Sunday to discuss the repatriation of remains of USA soldiers killed in the 1950-53 Korean War, a pledge Trump had said he secured from Kim during last month's summit. Kim is reportedly eyeing Switzerland as a potential venue for a second meeting, with North Korean diplomats sent to Bern, Davos, and Geneva last week to scope out hotels and conference centers, Kyodo reported.
U.S. President Donald Trump and North Korea's leader Kim Jong Un walk together before their working lunch during their summit at the Capella Hotel on the resort island of Sentosa, Singapore June 12, 2018.
North Korea has long trumpeted a denuclearization goal, but one that it sees as a lengthy process of undefined multilateral disarmament on the entire Korean peninsula, rather than a unilateral dismantlement of its nuclear arsenal.
In the letter Trump released on Thursday, Kim repeatedly referred to the U.S. president as "Your Excellency".
"I deeply appreciate the energetic and extraordinary efforts made by Your Excellency Mr. President for the improvement of relations between the two countries", Kim wrote, according to the letter, dated July 6.
Pompeo's reception in Pyongyang last week was chillier than during his previous two trips to the North Korean capital and he didn't meet with Kim Jong Un.
The US military has since announced that 100 wooden coffins have been moved to the inter-Korean border in preparation. Roughly 5,300 United States troops presumed to have been killed in the Korean war are unaccounted for.
Pompeo, speaking Wednesday to reporters as he arrived in Brussels for a NATO summit with President Donald Trump, said that change was up to North Koreans.
According to documents seen by AFP, the USA sent a report to the United Nations sanctions committee that estimated at least 759,793 barrels of oil products had been delivered to North Korea between January 1 and May 30, well above the annual quota set at 500,000 barrels under a sanctions resolution adopted in December.
"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.
"The U.S. side had had discussions with the North with an aim to hold the talks as early as July 12, but it appeared that the North was not ready for the talks", the source told Yonhap News Agency on condition of anonymity.
The secretary of state did not meet Kim as he had on his previous two trips to Pyongyang this year, and after his departure, the North's foreign ministry accused the US of making "gangster-like" demands that it unilaterally give up its nuclear weapons.
Pompeo called the talks "productive", although North Korea said it was disappointed with the emphasis on denuclearization with a lack of security guarantees.
According to estimates from the Pentagon, 7,700 US troops are still unaccounted for from the Korean War.
"No one can be optimistic about the results", Moon said in Singapore on Thursday, "but my cautious outlook is that the negotiations would be able to succeed if the North carries out a complete denuclearization, and the global community gathers efforts to provide security guarantees to the North".