It isn't up to "the west" or the EU when it comes to which nations can join NATO. NATO is pro "democracy" in that its up to the population of a country to request that the country joins NATO (via the voting booth and popular sentiment).
If the people want it, it is then up to the government to get its crap in order before it applies for membership (again, via the voting booth and popular sentiment).
NATO doesn't want to expand, NATO wants to keep the peace. Recall why NATO was founded (the destruction from WWI and WWII) in the first place.
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