"You'd rather stand in the fog of your inability to google" I think Root is saying
If Obama was a dictator, and said he was going to give nuclear weapons to a known and dangerous terrorist organisation or something, and China intervened with tactical nuclear action, I'd say that's justifyable. But since America is a democratic country and part of an alliance of other fair, democratic countries I doubt this would happen frankly.
Also, China would absolutely destroy America if war was ever declared between the two I think. The willpower of the chinese would be formidable, combined with their nuclear stockpile and the vast size of their army, and the patriotism of their people for their country. Being a communist country they can drum up huge amounts of support and fighting spirit to protect the way they operate.