Sohae Engine Test Part of Coercive Diplomacy Tactic as End-of-Year Deadline Approaches

Military, Nuclear Weapons
, by and On December 7, North Korea conducted what it described as a “…very important test at the Sohae Satellite Launching Ground.” Satellite imagery in the days leading up to and after the test clearly shows that this was a rocket engine test at the vertical engine test stand at Sohae. This test was most probably of a liquid-fuel rocket engine as only liquid-fuel rocket engines have previously been tested here, while large solid rocket motors have been tested at the Magunpo Solid Rocket Motor Test Facility on the east coast and elsewhere. Whether the liquid-fuel rocket engine was an existing model or a new one is unknown.

December 2019 Sinpo Update: No Significant Developments

, by and There is no evidence that the “newly built submarine” inspected by Kim Jong-un on July 23, 2019 has been launched. While many media sources have described this new submarine as an imminent threat, it is more accurate to describe it as an emerging threat. The large canopy constructed during late-August and early-September that conceals much of the submarine dock precludes confirmation that the existing SINPO-class experimental ballistic missile submarine (SSBA) is present.

North Korea’s No. 17 Explosives Factory: No Significant Activity

Military, Nuclear Weapons
, by and Satellite imagery acquired on March 21, 2019 and over the past six months indicates that the No. 17 Explosives Factory near Hamhung is active. While no significant changes have occurred with its infrastructure during this period, the factory was expanded during 2012 with the construction of a large mixing/casting facility capable of producing large solid-propellant rocket motors for ballistic missiles.