Utterly ridiculous how blase you people are about nuclear war.
Russia has a perfectly reasonable nuclear doctrine and I believe the Russian government will abide by it. If you don't then it speaks very poorly of your opinion of said government's competence (and sanity) and makes your continued defense of its actions rather baffling.
I mean, if we go through the possible scenarios.
- The Russian government will use nuclear weapons to resolve political or conventional military conflicts despite not being at war
This means you are dealing with people who do not care about their own lives, about the lives of anyone else or about the well-being of the nation they govern. There is nothing which can be done to placate those people because they do not follow any comprehensible human logic. Everything possible should be done to remove those people from power before their insanity destroys the planet.
- The Russian government could hypothetically reach the point of tactical use nuclear weapons via a prolonged escalation of the war in Ukraine
In this case, avoiding nuclear war is contingent on ensuring that any form of escalation that might lead to the use of nuclear weapons is extremely punishing, and that it is clear that the use of nuclear weapons would lead to global punitive measures so severe that it would completely outweigh any military benefits. Giving concessions in response to escalation makes escalation rewarding.
- The Russian government has no intention of using nuclear weapons short of the conditions described in its nuclear doctrine but deliberately flirts with the idea to try and intimidate the populations of other countries
In this case, again, it is integral that those threats are not in any way rewarding and, in particular, that they do not lead to concessions by non-nuclear-weapons states. Because if nuclear threats are seen to work, then the only way to defend yourself against them is to have nuclear weapons yourself. The result would be nuclear proliferation and an escalating risk of nuclear war in the future.
Sweden, a country of (at the time) 8 million people with an economy more than 30 times smaller than the US was an estimated 6 months away from testing when it abandoned its nuclear weapons program in the 60s. Today, there are many, many countries (including Ukraine) which could develop nuclear weapons given sufficient political will to do so.