The most clear trend in modern times is that rules are "flexible" when convenient. Here [1] is the relevant Wiki page, dated to the day before Russia's invasion. NATO had repeatedly emphasized that Ukraine would be accepted into NATO, all that was missing was a date. In the context of this, there was ongoing escalation between Russia and NATO. Russia repeatedly sought any sort of means or agreement to ensure that they wouldn't end up with NATO setup on their doorstep. And NATO increasingly antagonistically disregarded and even belittled such interests. At the same time being ever more provocative with things like NATO-Ukraine military exercises in the Black Sea.

It feels very much like the intent was to provoke, especially when this largely parallels the Cuban Missile Crisis with roles reversed. When the USSR wanted to expand their military reach to Cuba, we nearly started a nuclear war over it. And in that case, Cuba doesn't even share a border with the US! So it's not like we simply lacked the ability to understand why they might have a genuine concern here.

The reason I backdated the article is because when you read that it sounds exactly like Russia is making their intentions of an invasion, if a compromise cannot be reached, rather unambiguously clear. And so if you read it, with hindsight, one might think it was edited with that outcome in mind.

[1] - https://en.wikipedia.org/w/index.php?title=Ukraine%E2%80%93N...