Revolutions are bloody, but Lenin wasn't a mass murderer. Russian workers/peasants were a decade behind industrialized nations when they overthrew the Tsar, and they quickly caught up. Unfortunately, industrialization was a brutal process globally, and god knows how many people died. Upton Sinclair's the Jungle, describes the horrors American workers experienced, and it's gruesome.

Maybe Putin wants to be Tsar, but I don't know or care. I can't do anything about Russia's president, but supposedly, I have the right to demand that my government acts responsibly by de-escalating this madness immediately.

I doubt, out of the blue, Putin threatened nukes, but who knows? As far as I can tell, Western governments intend to pursue the conflict rather than assess a potential resolution. Maybe, they think Putin's bluffing, but I don't think it's a good idea to test that theory.