Michael Elleman, a former consultant for the Pentagon, believes that the Soviet-era RD-250 liquid-fuel engine is the one being used by North Korea for its Hwasong-12 and 14 ballistic missiles.
Aviation News
Michael Elleman, a former consultant for the Pentagon, believes that the Soviet-era RD-250 liquid-fuel engine is the one being used by North Korea for its Hwasong-12 and 14 ballistic missiles.