1. You can absolutely blame Russia. When the nukes were taken away, new launch facilities were dismembered, and TU-160s (Jet strategic bombers, very large ones, which are always a serious threat for people who don't know) were cut OR TRANSFERRED to Russia. Russia knew exactly what it was doing.

2. Hitting Moscow from across the border with a real late 80s ICBM isn't exactly complicated for a country like Ukraine. Especially in this day and age. You drastically overstate the role of centralized C&C here. I want to stress that Ukraine demilitarized MODERN facilities. These aren't 60s hold overs.

The West, of course, lied too. That doesn't absolve Russia however.