Artful Dodger
"Neko no me"
Have to wonder if NATO has dozens of goodies including ATACMS just waiting for immediate delivery to Ukraine from over on the Polish side of the border in the event Putin decides to do something stupid like use a tactical Nuke.
ATACMS won't help going forward. You'd need to neuter the Russian's ability to command their nuclear forces, and quickly. If it were me, I'd send a wing of B-2 Spirits (stealth deniability) with GBU-57A/B Massive Ordnance Penetrator (MOP) to take out all their C3 bunkers.
Then, depending on which delivery system the Russians chose to use, I'd burn the remainder of them to the ground. But no nukes, just thermobaric weapons. Gets the point across, makes them think carefully about the next move.
Russian Nuclear Disarmament should be the West's objective. voluntary at the peace table, or violently at the tip of the sword. Their choice, but time limited.