Not to mention that it's not going exactly according to plan there with probably thousands of russian casualties...
- They might have cyberwarfare capabilities they are not using against Ukraine, or have spies in place that can sabotage critical infrastructure.
- Their Avangard hypersonic glide vehicles can reportedly be equipped with conventional warheads (even though Russia probably only has a handful of them)
- They might think they can get away with limited nuclear strikes against non-NATO nations (unlikely, even if it doesn't start WWIII there would be no coming back from the resulting sanctions)
Of course if they do any of that they have to defend against counterattacks, but defending their territory is what the Russian army is best equipped to do.
https://www.reuters.com/world/russias-lavrov-says-third-worl...
If the Ukraine invasion is any indication of the might of Russia's military, it has demonstrated that Russia's might is largely tanks and mobile missile launchers. The US has assets in the air, on the ground and off the coast of Russia right now that are ready to redefine the meaning of "shock and awe" at the first sign of nuclear use. Putin has one chance to get his missiles off the ground before complete annihilation in a matter of minutes.
Once a massive nuclear attack starts, the only options are massively launching back, or not answering and hoping for the best, both for your country and the planet.
you're not serious?