> Will NATO come for let’s say Latvia or Lithuania? I honestly don’t think so.

Poland may, because they see Russia as a nr 1 threat. USA have to because they(NATO) will lose any credibility. If they won't Germany, Japan, Poland, Ukraine, South Korea and Taiwan will start nuclear programs right away.

Nobody wants nuclear proliferation.

This Russia-Ukraine issue is a negotiation tactic from Russia. There will be no invasion because it's too expensive to occupy a large country.

Short term: Russia would like a land connection to Crimea, cause they have a problem with water. They don't want Ukraine in NATO.

Long term: Russia negotiating position is weakening. They have army and natural resources. As world will be less dependent on carbohydrates, oil and gas in Siberia will be too expensive to extract.