[mcv]

I don't really think China is an option either. Maybe for the west coast, but I really don't think they can do much for the eastern half of Canada. Though EU+China might do it.

Problem is, China might be happy to see the US invade Canada, because then they can finally take Taiwan. And that's the real danger of Trump's foolish aggression: by weakening American's alliances, he's giving China more space to assert itself and take what they want.