Why did Putin choose to shut the door to the Western world?

 In the early 2000s, Putin made several attempts to get closer to the West. It was his wish. He appealed several times saying that Russia could very well be part of the European Union one day.

And then, Putin encountered several times rejections that pushed him to completely change his strategy from the beginning of the 2010s.

Rejected in the West, Putin turned to the East: China and Asia.

If Putin had been better regarded in the early 2000s when he wanted to get closer to the West, things would probably have evolved differently afterward.

We will never know of course, but that is my hypothesis.

Now Putin has strong resentment towards the West, and he wants to take what he says is Russia's property: Ukraine. He is rewriting history to suit himself and has entered into a destructive war that could mark the beginning of his end.