This was the beginning of America's imperialist wars against the whole of South America, and if we're smart the beginning of a global alliance against the US. This is a rabid, deranged country that needs to be contained and fought against. South American countries need to rapidly militarize and form alliances with China and the EU, while forming an alliance of their own. This also proves beyond doubt that America absolutely will invade Canada and Greenland, no crime or treachery is beneath them. They're a thoroughly morally bankrupt country on par with Russia or even worse, since they always sold themselves as some moral paragon.
It may even be necessary to form a global military alliance against the US to keep them in check. All cards are on the table. America simply needs to be broken, and its stupid populace is so detached from reality it doesn't even see how far they degenerated as a people. Unless Trump and MAGA are wholly destroyed right down to their core from within by Americans themselves we can safely conclude that they've chosen to be imperialists, and as such all attacks on Americans everywhere become a moral imperative.
There is also an added and simple conclusion - acquiring nuclear weapons is the only path for any country that wishes to remain sovereign. And once again - Canada and Greenland will be invaded. So will all South American countries. The world war is near again, and it's the world against America. That's what WW3 will be about.