I don't get comments like this. Ukraine is not a NATO-member and therefore NATO is not involved here. It's Ukraine on its own now. It is what it is.
And I genuinely don't think that being a NATO member would have made a big difference. Putin seems to have succumbed to pure lunacy and it's very dangerous to get involved without thinking carefully when you are dealing with someone acting desperate. I don't mind criticizing NATO and the west but it's a good sign that they don't act recklessly, we are not talking about a conflict against the 50th military power.