>Ukraine was not made a member of NATO - it hadn’t even applied. At no point did Russia even rattle any sabres, offer red lines, or pursue diplomacy.

To be fair, without saying that their position is a defensible one- they've been pretty vocal about Ukraine not becoming aligned with the West for almost 20 years now if not longer, and politicians in the West have been vocal about the exact opposite for at least as long. I see people saying online that what's happening now was completely irrational and unexpected but that's not really true. We know it's a sore point for them and have been goading them with a "will we won't we" over a clear red line they've drawn for a long while now. https://www.rferl.org/a/1079726.html