SEOUL, South Korea – According to American military analysts and South Korean intelligence officials, North Korea has begun rebuilding facilities to put satellites into orbit and test engines and other technologies for their intercontinental ballistic missile program.
The days after the collapse of the second summit meeting between northern leader Kim Jong-un and President Trump last week in Hanoi, Vietnam. It may be a first sign that North Korea is preparing to end its moratorium on missile testing, which Mr. Trump has claimed as a major diplomatic achievement.
North Korea began demarcating the Sohae Satellite Launch Station at Tongchang-ri near the Northwest, China's border with China last summer after Mr. Kim held his first meeting with Mr. Trump in Singapore in June. In part, an engine test area, a rocket launch pad, and a rail-mounted building have been dismantled, with which engineers assemble launch vehicles and transport them to the starting field.
However, this offer is now in question after Mr Kim's meeting with Mr Trump in Hanoi ended without agreement on the end of the North's nuclear weapons and missile programs.
In Hanoi, Kim called for the lifting of the sanctioning of United Nations sanctions in exchange for dismantling its Yongbyon nuclear complex north of Pyongyang, the capital of the north, as well as the facilities of Tongchang-ri. Mr Trump rejected the request and described the lifting of the sanctions as too high to pay for the partial rapprochement with denuclearization.
Although the Yongbyon complex was used to make atomic bomb fuel, North Korea is expected to have other fuel facilities elsewhere, as well as fissile material, nuclear warheads, and rockets stored in secret locations.
Analysts have been wondering what Mr. Kim's next move could be after the collapse of the Hanoi talks. In a New Year speech, he warned that North Korea would find a "new way" if the United States imposed sanctions.
The news of the reconstruction in Tongchang-ri appeared only hours after Mr. Kim's return on Tuesday from Hanoi.
Speaking to lawmakers behind closed doors at the South Korean National Assembly on Tuesday, National Intelligence officials pointed out that North Korea had rebuilt the Tongchang ri facilities before the Hanoi summit, South Korean media reported Wednesday.
North Korea may want to rebuild it to make mining more dramatic if the Hanoi summit had resulted in an agreement with the Americans, the intelligence said. Or she might have had the option to resume the missile tests if the Hanoi talks collapsed.
The secret service refused to confirm the South Korean reports on Wednesday.
North Korea has failed to conduct nuclear or missile tests Mr. Trump cites this as a major achievement of his policy of imposition of stringent sanctions that forced North Korea to return to the negotiating table.
At a press conference in Hanoi last week, Mr. Trump spoke. Trump said Mr. Kim had promised not to resume nuclear or missile tests. Later, the United States canceled two large-scale joint military exercises with South Korea to support the support of Mr. Trump's diplomacy with Mr. Kim.
The Tongchang-ri facilities were crucial to North Korea's space and missile programs. The country has used the facilities there to fire satellite-based rockets. The United States has designated the satellite program as the front for the development of intercontinental ballistic missiles.
Mr. Kim visited the rocket engine test site in 2017, when engineers there successfully tested a new high-thrust engine that allegedly powered intercontinental ballistic missiles that launched north months later.
Tongchang-ri reports released on Tuesday were based on satellite imagery obtained on Saturday, but analysts said the work could have started in mid-February.
"Efforts to rebuild these structures began sometime between February 16 and March 2, based on commercial satellite imagery. 2019 ", 38 North, a website specializing in North Korea's analysis, said in a report on the Tongchang ri facilities on Tuesday.
"The transfer building is mounted on rails on the launch pad," it says. "On the engine test bench, it looks like the carrying structure of the engine is being reassembled."
Beyond Parallel, a website of the Washington-based Center for Strategic and International Studies, issued a similar report on Tuesday.  "Commercial satellite imagery acquired on March 2, 2019 shows that North Korea is seeking a rapid rebuilding of the long-range missile site," it said. The renewed activity "after the Hanoi summit" could point to North Korean plans to demonstrate resolve. "
Officially it says that North Korea will no longer have to carry out nuclear or missile testing because it has completed ballistic missile launching and development of its nuclear-capable intercontinental park and mass production, but some Western officials and analysts still doubt that the country is the most dangerous country." Mastering the technologies needed to reliably hit a target with a rocket over the sea.
At his meeting with Trump in Singapore, Mr. Kim vaguely decided to "work to completely denuclearize the Korean Peninsula. "Since then, the North has been forced to take specific measures to dismantle its nuclear and missile programs, calling it a" one-sided, gangster-like demand for denuclearization "and insisting that it will not develop any further, unless the Denuclearization United States undertake "appropriate" steps.