Earlier quoted context omitted.
People way underestimate what kind of mental fortitude you have to have to fight an overwhelming enemy. That's not something a tourism oriented country like Cuba has. At least I massively doubt that. It lacks the ideology to fight such a war, since you have to be ready to die. That's why Yemen and Vietnam won, while Venezuela folded. This is also why US "culture" is so much more powerful as a weapon than the aircraft…
The willingness to fight until the end, whatever the cost, is not something you rate a priori. The thing with war is that once you have it for a certain amount of time, you create a generation of people whose kids died, wife died, neighbors and family died, you have nothing to loose anymore. There is a critical mass of casualties upon which you effectively create a population whose sole purpose, for generations, will…
You... didn't learn history from before 1945 did you?