Russia has absolutely nothing to gain by escalating war in Europe. America has nothing to lose. Everyone knows who wants war.
Russia - lets be clear, the country that is threatening an all out invasion of a Sovereign nation it's already attacked and occupied; has the possibility of gaining territory, blocking NATO expansion, threatening it's former Warsaw Pact partners into favourable deals, gaining control over Ukraine's enormous agricultural resources, etc etc.
The revival of Ukrainian nationalism in the modern era was actually a major project of Lenin's. The west is picking up and working on Lenin's own project, although in a slightly different form.
The Cuban government has for decades asked the US to remove its military presence from Cuba, including the detention center where it kidnaps people from random countries (again, against protest from those countries) and tortures them. Perhaps white upper middle class western liberals can rally to the Cubans cause.