Here are a few of the assertions Mr. Trump made during a cabinet meeting on Thursday, and a look at how they compare with the facts:

‘They’ve stopped the sending of missiles, including ballistic missiles’

True.

Last November, North Korea launched an intercontinental ballistic missile that officials said was powerful enough to reach the mainland United States, the latest in a series of missile tests that the North carried out last year. (It also tested a nuclear weapon in September.) Since then, it has not launched any missiles. Its suspension of both nuclear and missile tests eased the way for Mr. Kim’s meeting with South Korea’s president, Moon Jae-in, in late April and his talks with Mr. Trump.

In April, North Korea said it no longer needed to test nuclear weapons or intercontinental ballistic missiles because it had finished building its nuclear deterrent. But some Western analysts doubt that the North has truly mastered all the technologies needed to deliver warheads that can survive re-entry into the Earth’s atmosphere and hit targets across the Pacific.

‘They’re destroying their engine site. They’re blowing it up.’

Premature.

Speaking to reporters in Singapore after the summit meeting, Mr. Trump said North Korea had promised to dismantle a facility for testing missile engines. North Korea has yet to confirm that Mr. Kim made such a promise, nor has it announced any plans to destroy such a facility.

Mr. Trump did not say what site he was referring to. Analysts have focused on a facility at the Sohae Satellite Launching Ground in Tongchang-ri, in northwestern North Korea. In March of last year, North Korea successfully tested a new high-thrust engine there, one that analysts said was later used to power its intercontinental ballistic missiles.

Satellite imagery from June 12, the day of the summit meeting, revealed no signs that preparations were underway to dismantle the engine test stand at Tongchang-ri, Joseph S. Bermudez Jr., an expert on the North’s missile programs, said in an analysis posted on the website 38 North.