I think Ivan proved their belief in the concept of “Total War” during WWII.
These desert monkeys probably have no concept of what they are dealing with. They will be screaming and begging for the USA before long.
Russian national pride was a lot of the fuel that made it go, and because their country and its fighting force was so awesomely big. Retrospects on WWII show that they often did not fight even as vigorously as they theoretically could have. Size mattered.