That is correct, people forget Germany was The military power in both World Wars, in both technology, training, tactics, and leadership. Is Russia a major military power? Yes. Do they have the military and industrial complex to launch anything similar to the Germans in both World Wars? No, they do not. Neither do the Chinese and neither do we to be fair, but we are the only ones who are probably the closest to possessing that capability. The World and societies are much different than a century ago. I am not going to say that no country has the stomach to endure millions of casualties, outside of maybe the Chinese, but the notion that this has the potential to launch into WW3 is misguided imho. Never say never, but the days of total conventional wars are more than likely over. I would be shocked to see another nation arbitrarily carpet bomb or lay siege to a city using mass artillery fire. I could be wrong but it will be a tactical strike into certain regions of Ukraine with limited outside interference.