It's bizarre to think there are rules in wars between countries but no rules in civil wars. In a civil war every party is still liable to the world as they're i

It's bizarre to think there are rules in wars between countries but no rules in civil wars. In a civil war every party is still liable to the world as they're in a conventional war. If they use chemical or nuclear weapons they know that it's entirely possible third parties may get involved just because of their dirty tactics. If you're in a country where the West doesn't give a shit, and nobody bats an eye when chemical weapons are used (e.g. Syria) it doesn't make much sense to think that the same wouldn't apply if this were a conventional war (say, Syria vs Iraq). Obviously nuclear weapons are a bit bigger deal than chemical weapons, but what I'm trying to say is that similar dynamics are in play both in civil wars and conventional wars. If you're in the belief that a nuclear civil war can happen when a rogue party can shoot nukes, why wouldn't they shoot it to another country if they come to power? If you think "well then US would get involved so they obviously wouldn't do that" then why would US not get involved nukes being used in a civil war.