Russia-Ukraine War: What are hypersonic missiles?
With the war raging it is important to understand these novel – and controversial – weapons.
A missile is launched during what state media report is a hypersonic missile test at an undisclosed location in North Korea, January 11, 2022, in this photo released January 12, 2022 by North Korea's Korean Central News Agency (KCNA).(photo credit: KCNA VIA REUTERS/FILE PHOTO)Updated: 
