Is North Korea manufacturing its own high-performance missile engines?

The first stage of North Korea’s new intercontinental-range ballistic missile (ICBM), the Hwasong-14 (KN20), and intermediate range ballistic missile (IRBM), the Hwasong-12 (KN17), both use a variant of a Soviet-origin engine. Specifically, both missiles, based on their observed flight tests, use a single-chambered variant of the Soviet-origin RD-250 family of liquid-propellant engines with 48 tons … Continue reading Is North Korea manufacturing its own high-performance missile engines? […]