Russia never said they were going to invade Ukraine. They said they would reply with "military-technical" measures to NATO expansion. They already moved S-400 SAM systems to Belarus and moved more Iskander-M systems close to the border for example. Those are "military-technical" measures.
That's exactly what I said back in pages 19-20 of this thread:
Again, "military-technical action" isn't an ultimatum for war...
The "military response" he is threatening is withdrawing from the INF Treaty, and he also doesn't seem to be encouraging the view that Russia is about to invade Ukraine..
Russia's deployments leave its options open but that doesn't mean it wants to launch a full-scale invasion. If that was its primary objective, it would've already pulled the trigger last year without issuing any ultimatums.
The challenges Russia is facing in Ukraine right now are not Operational or Tactical. It can win the war if it launches. The problems for Russia are at the Strategic level. A) It doesn't want to risk the European gas market. B) It's true objective has always been neutralizing NATO itself, not just which land route NATO chooses (i.e. Ukraine.) It wants to fracture NATO by creating a division within it. And the key to that is Germany. As soon as Germany decides it no longer wants to side with the US's hegemonic goals in the region, NATO is finished and Russia's Western flank is secure.
Ideally, Russia would want to fracture NATO with just ultimatums/pressure. But that hasn't worked so far. So now the question is, if Russia launches this war, what will Germany do? Will it abandon the US and keep buying Russian gas? If that happens, Russia wins and NATO is finished. On the other hand, if Germany sides with the US, then Russia hasn't really gained much in invading Ukraine and its strategic problems remain (and may actually get worse.)