Nuclear Weapons in War

I think that for russia to use nuclear weapons, even as a demonstration, but especially on the battlefield, in this conflict would be utter madness. No one has used nuclear weapons in war since the united states has used them then the what were two? But thitis to say that none of us know for sure what'll happen, or how the international commutia will react. We can say for sure, i ias it is going to be quite bad. But i think it'san incredibly unlikely event. And I worry that moscow does not appreciate that sure.