And maybe US had no need to invest $5B into "support of democracy in Ukraine" (translation: to turn Ukraine into an anti-Russian puppet state)? There are different kind of wars, and there is one kind born out of fear of a threat. The Peloponnesian Wars started because Athens feared the growing might of Sparta; the wars of 1863 and 1870 were rooted in the fear of Austria and France of the growing power of Prussia; the reason for the 2nd Anglo-Boer War was the threat the Boers posed for Cape Town, which was of paramount strategic value for the British Empire. Similarly, Israel started the war in 1967 because the possession of Sinai by Egypt, then quickly rearmed by USSR, posed a deadly threat to Israel's existence. These are the rules states and nations live by, and likely not much had changed here since our ape-like ancestors. Putin could not stand Ukraine in NATO (de jure or de facto, whatever) for the same reason JFK could not stand Soviet nukes in Cuba. That is, because this was too much of a threat. Luckily, back then JFK and Khrushchev managed things well, but I am not so sure about today.