To start this off, it’s completely a hypothetical. Doesn’t matter if it kicked off again in the Korean Peninsula, or if it was due to an invasion of Taiwan or even an intervention by E.U forces in Ukraine against Russian aggression, you pick and I’ll reply on how this battleground would shape the conflict and your opinion on this.
I think I’ll explain as of now that there will be NO NUKES used in this scenario- no matter, even if they’re just tactical nukes. The battleground you pick out will shape the factions and alliance’s on either side.