Does anyone know that we have satellites monitoring any time the Russkies launch a bottle rocket? We know every time they launch, where it was from, and where it is going. This was no surprise to no one. They likely told us in advance.
My personal theory is that the missile was likely old and going to be removed from service, so they stripped off the nuke warhead and filled the warhead with rocks. The damage inflicted at the impact site was not very impressive. It was intended as a threat and that is the way it was recievd by anyone without a clue as to how the Russkies operate.