Trump has hailed his July summit with North Korean leader Kim Jong Un as having opened the way to denuclearization of the divided peninsula, defusing tensions that less than a year ago brought the two countries to the brink of conflict.
While the delay might have resulted from "scheduling problems", there is speculation that the cancellation indicated stark differences between Washington and Pyongyang over who should make a concession first before moving on in their denuclearisation talks.
Thirteen undeclared North Korean missile operating bases were identified in a new report which undermines the Trump administration's claims that its outreach to Pyongyang is making progress in getting Kim Jong Un's regime to give up its nuclear weapons programme. For decades, the bases have been camouflaged to prevent destruction from preemptive strikes and during military operations. "The United States remains focused on fulfilling the commitments agreed to by President Trump and Chairman Kim at the Singapore Summit in June".
Kim Sung Han, the dean of Korea University's Graduate School of International Studies and a former South Korean vice-foreign minister, said that the CSIS report showed the need for a "verifiable declaration" of North Korea's nuclear and missile capabilities as the next step in negotiations.
"North Korea's decommissioning of the Sohae satellite launch facility, while gaining much media attention, obscures the military threat to US forces and South Korea from this and other undeclared ballistic missile bases", Bermudez said.
The US was also seen trying to get China, North Korea's Cold War ally that is locked in a trade war with the US, on its side for implementation of the sanctions during their bilateral meeting on Friday.
"We are in no rush", Trump said Wednesday. The rockets have stopped.
The report was released less than a week after North Korea abruptly called off a new round of negotiations with Pompeo that had been set for Thursday in NY.
North Korea is developing 16 ballistic missile bases despite talks of denuclearization, the New York Times reported Monday. The KPA's Strategic Force - responsible for operating ballistic missiles - is sizeable.
North Korean leader Kim faces continued global pressure over his weapons programmes.
Beyond Parallel carried out extensive research, interviewing North Korean defectors and government and defence officials from around the world.
"Missile operating bases are not launch facilities", Bermudez wrote.
The sites identified were described as "small, dispersed throughout the nation, and, with few exceptions, located in narrow mountain valleys". Some are likely to house missiles that could reach the continental U.S. when they become deployed.
There have been several recent signs that diplomatic efforts between the United States and North Korea were stalling.
The one closest to the Demilitarized Zone (DMZ), the Sakkanmol base in the "tactical belt", is said to house a SRBM unit, one that could accommodate more capable medium-range ballistic missiles if necessary.