It might not be MAD but there is a really strong incentive from everyone else to maintain the nuclear taboo. Russia can expect NATO to get directly involved in the conventional war as well as losing their remaining allies if they do that. Whether that leads to further escalation or not is up to them.

I think NATO would respond, but non-nuclear. There is no need to answer tactical nuclear weapons with a nuclear strike. There are tons of NATO air forces available to strike against Russian troops in Ukrainian territory. They would just obliterate any Russian troops there.

It was a small but interesting news item, that a few days before the invasion, some of the US stealth bombers were moved to Rammstein air force base. So at any time there would be the capability of a forceful answer. But this also shows how ridiculous the claims were, that the NATO would seek to attack Russia, as that is the thing the NATO has tried hard to avoid so far.

Perhaps not, but China and India would definitely stop supporting Russia after that. China has a nuclear-equipped little madman of its own, so it needs to show what the consequences are for using nukes. India is also a nuclear country, bordered by another one, and can't imply Pakistan can just use nukes without consequence.

As if Pakistan is waiting for the global etiquette on the usage of nuclear weapons to change so they can nuke India!!

Both countries can’t use nukes because the other has them too. India has a fast growing economy at stake and Pakistan may be an economic disaster but Pakistani elites have huge assets in the west which can be frozen.

Usage of nukes in the Indian subcontinent has easily calculable first order effects.

In Ukraine it’s entirely different. It is ridiculous to suggest that the US will welcome the destruction of the entire human race if Putin even nukes civilian centres in Ukraine. They won’t. But there are second and third order consequences of such actions which are not in favour of Russia and certainly not in favour of Putin and his friends.

Speculation city, and Biden did clarify precisely a response to that a few days ago. The strength of the response depends upon the relative strength of the attack. Putin has been threatening nuclear holocaust for months now, and he would be wise to not do foolish things from his petulant temper tendencies. Bullies can’t accept people standing up to them, but them typically show themselves to be spineless cowards when the medicine is returned in force. It’s kind of characteristic of how bullies are formed from weak oppressed victim types who go sour and decide inflicting pain downstream is some solution to what ails their souls.

No it doesn’t. It seems Putin wants to conquer Ukraine and more importantly for the west to get over it. They certainly won’t if he nukes Kiev or does some such stupid shit.

The new Cold War will be sealed and it will be game over for his regime. He wants western apathy and social disorder to continue. And he wants a disaster zone in Ukraine as his personal entry point into Europe proper.

well, be damned