You clearly don't know how NATO works.
Name a NATO member force that is "occupying" the US. Or Canada. Or the UK, or Lithuania, Lativa or Estonia.
Basing and hosting is not occupation.
Agreeing to another NATO member sending their troops into your territory is also not occupation.
Here's the Status of Forces agreement and International Military Headquarters agreement for NATO that covers these arrangements:
Agreement between the Parties to the North Atlantic Treaty regarding the Status of their Forces
www.nato.int
Try and find where member states are permitted to be
occupied. If you're having trouble, I can give it to you in Russian.
NATO was formed because of the
SOVIET UNION, not Russia. Russia may have called the shots and been the largest by population (~50% of the people) and by land area (~75% of the area controlled), but it was just part of a larger entity.
Since the fall of the USSR, NATO has added more European nations to its membership at their request. It is noteworthy that a lot of the new member are former republics of the USSR - now, I wonder why they would want to be members of a large defensive military alliance?
Tough. Russia doesn't get to dictate whether Ukraine enters NATO or not
- any more than it gets to tell Lativa, Estonia, Lithania, Norway of Finland what they can and cannot do.
Ukraine is a sovereign state and is free to enter or withdraw any alliances it wishes.
Yes, it's unfortunate there was so much dithering. It's also unfortunate there were so many internal problems in Ukraine and vacillation between Western and Russian interests which prevented earlier accession to NATO - it would have potentially avoided a lot of bloodshed.
Not really. No more than we were on the brink of WW3 during the Korean War, or the Vietnam War, or the Soviet occupation of Afghanistan, or the Arab-Israeli War, or the Suez Crisis, or the Six Day War, or Yom Kippur War, or any number of proxy conflicts through the Cold War period.
Also, NATO has been involved with Ukraine since the end of the 1990s, and the process of Ukraine becoming a NATO member has been ongoing since 2002:
www.nato.int
So, NATO is hardly involved after the fact.