"Nato should have intervened robustly to deter Russia’s aggression right from the start, as repeatedly urged here. No-fly zones could have prevented thousands of civilian casualties and limited damage to Ukraine’s cities."

So stupid. The author is casually handwaving away the implications of nuclear armed countries directly going head to head when no NATO countries have been invaded. The author needs the most basic prior on geopolitics.

"Imagine how future historians may view all this."

I can imagine it going something like this: "It looks like they remembered the the implications of the death of the Archduke Franz Ferdinand and successfully avoided WWIII"