Explainer-Why is North Korea testing hypersonic missiles and how do they work?
By Hyonhee Shin SEOUL (Reuters) – North Korea has tested a new solid-fuel hypersonic missile with intermediate range, it said on Wednesday, in an intensifying race for the next generation of long-range rockets hard to track and intercept. The United States, China, Russia and other countries have also been developing hypersonic weapons in recent years.…