China has reportedly tested a hypersonic missile that circles the globe before descending to hit its target. The missile in question is believed to be capable of carrying nuclear warheads, and its development has taken US intelligence agencies by surprise.

According to experts, hypersonic missiles are difficult to defend against because they fly towards targets at lower altitudes and can achieve more than five times the speed of sound — or about 6,200 km per hour (3,850 mph).

https://www.independent.co.uk/asia/china/chin...40124.html