Both of those suppositions are nonsensical, that NATO and the world would ignore Russia incorporating nuclear weapons in its invasion of a neighbor, and that Red China and Russia would have ignored America nuking Hanoi.
You are promoting the normalizing of using nukes in a common dictator invading a neighbor, war situation.
NATO exists to save Europe and prevent such catastrophic WWIII beginnings by Russia.
What is it about Russia, or Putin, that suddenly made some people think that using nuclear weapons in regular warfare is the new normal?
No, I am not advocating nuclear weapons. What I am trying to do is educate people to understand that they are bluff weapons and political weapons THAT HAVE NO REAL WORLD USE -EVER.