About the Author
Colin Zwirko
Colin Zwirko is a Senior Analytic Correspondent for NK News based in Seoul. Follow him on Twitter @ColinZwirko.
North Korea says it tested a new "hypersonic missile" on Wednesday and that a new fuel transport system proved successful in freezing winter temperatures.
The missile successfully traveled 435 miles (700 km) to hit its target, making a 75 mile (120 km) lateral maneuver along the way, the Korean Central News Agency (KCNA) reported Thursday morning.