If Greenland and Canada are attacked this is a declaration of war against all of NATO. All USA bases on NATO soil (100+) need to be closely monitored. The USA can not be considered a trusted Allie when Trump is making threats to our territory. We may as well have Russian bases on our land because this person is going to be far worse than Putin. Trump wants a war and he does not care who with because it will ensure he can stay in power during a wartime setting.