Russia has spent decades digging underground survival nodes for city populations. They have a huge advantage for structural survival/victory.
Now this we can agree on, and they haven’t mythologized the unsurvivability of nuclear combat.
But; it’d leaves their kleptocrat leadership intact.
“Russia has spent decades digging underground survival”
Yep, Putin has his underground palace in Ural Mountains. Don’t think he will invite the Russian population to join him.