It is way more complex than you describe. And you have oversimplified it to the maximum. Playing the fascist card is ridiculous. Yes there is a small fascist element. No it's not decisive.
No the US has not intervened to wage war on Russia. Quite the opposite. Putin has overplayed his hand and he's not hitting goals.
This is so messy it's outraged even famously neutral nations like Switzerland. They were even neutral during WW2.
