Hypersonic is a poorly defined term. Some people use it to simply mean "faster than about 5x the speed of sound". That is what people mean when they say "Chin

Hypersonic is a poorly defined term. Some people use it to simply mean "faster than about 5x the speed of sound". That is what people mean when they say "China and Russia have Hypersonic missiles". But speed at that level is basically irrelevant for interception etc. Other people use Hypersonic to mean able to manoeuvre at those speeds. A normal ICBM, especially the old ones, cannot do that. They follow a simple, predictable, course to their targets. In theory that makes it easier to hit them. Only no one can do that. People have done a respectable job of shooting down non-ICBMs. But ICBMs are 10-100 times faster, further away, higher, etc. And no one will use 1, they will use 1000 and it is dooms day unless you intercept 990 of those. So all of this is really just a mix of honest ignorance (and confusing terms) and dishonest sensationalism... The point of a hypersonic missile is to NOT follow a simple parabolic curve to the target. That is what hypersonic really means: able to manoeuvre at speeds about the speed of sound. That makes it harder to intercept. Only no one can intercept an ICBM anyway. Interestingly this is why the first Hypersonic missile was actually build in the 1930s...