Russia says it used hypersonic missiles in Ukraine again
aljazeera.com
aljazeera.com
The fact that it could also be nuclear armed adds a little extra bit of terror, but they could potentially turn around a war that has, by all appearances, been going badly for Russia.
So the fact that they seem to be immune to air defenses is supposed to impress you, yes.
We all know the war has been going badly for russia but the US isn't concerned with non-nuclear armed hypersonic missles.