Mexico, Spain and Brazil call for Cuba’s sovereignty to be protected

We know the american populace will never rise up against anyone, so it does seem like Trump of Trumpistan has a blank check to do whatever he likes with the country formerly known as the usa. Would it be better if americans weren’t cowards? Sure. But to compensate they are very active online displaying their values loud and clear - we all know who you really are at heart now.

Mexico could cut off food and oil shipments. Sure it would hit them economicly but it'd make any invasion of Cuba even less popular than it already will be. If they wanted to use people as a weapon they could also shift from stopping to encouraging people to cross the border. The other two could probably impose similar but not as impactful sanctions.