January 21, 2019, by Joseph S. Bermudez Jr., Victor Cha and Lisa Collins— Located 212 kilometers north of the DMZ, Sino-ri is an operational missile base that houses a regiment-sized unit equipped with Nodong-1/-2 medium-range ballistic missiles (MRBM). It is one of the oldest of approximately 20 undeclared missile operating bases and is reported to serve as the headquarters of the Strategic Rocket Forces Nodong missile brigade. It may have also played a role in development of the newest generation Pukkuksong-2 (KN-15) ballistic missile first tested or unveiled by North Korea on February 12, 2017.

November 12, 2018, by Joseph S. Bermudez Jr., Victor Cha and Lisa Collins— Sakkanmol is an undeclared North Korean operational missile base for short-range ballistic missiles (SRBMs) and is one of approximately 20 undeclared missile sites and one of the closest to the demilitarized zone (DMZ) and Seoul, giving it the shortest flight time. Sakkanmol currently houses a unit equipped with SRBMs but could easily accommodate more capable medium-range ballistic missiles (MRBMs).

November 12, 2018, by Joseph S. Bermudez Jr., Victor Cha and Lisa Collins— New research undertaken by Beyond Parallel has located 13 of an estimated 20 North Korean missile operating bases that are undeclared by the government. These missile operating bases, which can be used for all classes of ballistic missile from short-range ballistic missile (SRBM) up to and including intercontinental ballistic missile (ICBM), would presumably have to be subject to declaration, verification, and dismantlement in any final and fully verifiable denuclearization deal.