'I would be disappointed'

• North Korea may be preparing a missile or space launch: NPR

US President Donald Trump said on Friday he would be disappointed if Pyongyang were to resume weapons testing and reiterated his belief in his good relationship with North Korean leader Kim Jong Un despite the collapse last week of their second summit.

"I would be surprised in a negative way if he did anything that was not per our understanding. But we'll see what happens," Trump told reporters. "I would be very disappointed if I saw testing."

Trump's comments came after two US think tanks and Seoul's spy agency said this week that North Korea was rebuilding a rocket launch site at Sohae in the west of the country.

There have also been reports from South Korea's intelligence service of new activity at a factory at Sanumdong near Pyongyang that produced North Korea's first intercontinental ballistic missiles capable of reaching the United States.

On Friday, US National Public Radio quoted experts from California's Middlebury Institute of International Studies as saying that satellite images of Sanumdong taken on Feb 22 and on Friday suggested North Korea could be preparing to launch a missile or a space rocket.

One of the experts, Jeffrey Lewis, told Reuters the activity at the two sites was "probably connected." NPR said the Feb 22 photos showed cars, trucks, rail cars and two cranes at Sanumdong, while in those taken on Friday, the activity had died down and one of the cranes had disappeared.

North Korea has frozen nuclear and missile testing since 2017, and Trump has pointed to this as a positive outcome from nearly a year of high-level engagement with North Korea.

Kim pledged at a first summit with Trump in Singapore in June that the engine test site and launch platform at Sohae would be dismantled. He repeated the pledge in a summit with the South Korean president in September.