The crux of the argument is since the West is expanding NATO then it's the West's fault. Excuse me - what does national sovereignty mean? If the Ukraine desires

The crux of the argument is since the West is expanding NATO then it's the West's fault. Excuse me - what does national sovereignty mean? If the Ukraine desires to join NATO and NATO desires to have the Ukraine join then that's the Ukraine's prerogative as a sovereign nation. It's also Russia's prerogative to invade a sovereign nation, but they should fully expect to pay a price for that - up to and including all-out war. This isn't difficult. Both sides are calculating the costs and how much they're willing to pay.