The neat thing for the Russians is that they have FAR MORE than just one system. For example, they have stealth drone subs that can park just off our coasts and give our cities a nuclear black eye*.
I guess we can find out how our defenses work against those.
*I know, but I’d still like our cities to survive
The Russians spin all kinds of crazy yarns and the media morons love to carry their water. They claim to have a Mach 27 missile (which is a shade over 20,000 MPH). Putin should’ve consulted an aerospace engineer before floating that lie. At Mach 27, your missile is no longer sub-orbital. It will hang out in low earth orbit until it picks up enough drag to drop out of orbit and come down SOMEWHERE, which will take years. Putin is not very bright.