Just to get people confused: Putin wanted to join NATO, but it was us who wanted him to "get in line". He also wanted to join EU, but again we told him to "get in line".
https://www.theguardian.com/world/2...-wanted-to-join-alliance-early-on-in-his-rule
Yes this was at the start of his reign where to be fair he was a relative unknown in the international world, but think about it if he got Russia into NATO and EU very unlikely they would pick up arms against him, more like he would use the combined muscle to 'influence' world order as he has tried to.
He did not see Russia as a member, more an equal partner, which of course was refused.
World Politics changed in this time China became a superpower, America came under attack on its own soil and crucially the NATO backed the US in its response, now given this was the same power designed to defend member nations from then Soviet Pact, this must have resonated and shown Putin he would never be accepted.
He sought to make allies in the east who shared his dislike for the US and the west and so a dictator was born.
NATO and the UN have watched this situation evolve for decades, if Russia did not possess a massive nuclear arsenal they would have acted long ago to snuff this out, but the fear that Putin may reach for the last resort has left them powerless and weakened and he knows it.
The arms treaty on nuclear weapons expires next year or 2026, neither side have committed to a new agreement, this means Russia can now build as many nuclear weapons as they want as they are under no agreements of obligations and unlikely to come back to the table at this time.
The monster has grown and now it looks like no one no thing can put him back in his box the only hope is his own people turn on him with the prospect of mutually assured destruction, right now the illegal invasion has little or no effect on a lot of Russian people, however if Putin starts the nuclear arms race again not sure everyone will be onboard with that, the Oligarchs and organised crime syndicates that masquerade as Russian Authorities will see gravy train derail, you can't make money when you kill your customers!
The rest of the world is watching closely to see what is tolerable now Putin has raised the bar on what is acceptable