Ok, just follow through with the logic.
If the US 'flatteNed' Cuba (like Gaza) in response to a few drones - it would 100% make the US 'The Evil Empire' and turn the world 100% against America as a neo fascist entity.
The costs would be unthinkable, and probably the demise of the nation as a having a 'historical special place'.
It would not ever fully recover, and the 'New World Order' would be something really hard to imagine.
In reality - something else would play out ..
I think the response would be disproportionate, but probably focused, but it depends on the 'populist effect' aka what exactly Cuba attacked, and how it was provoked.
If the US attacked Cuba first, and responded with drones on a US military installation - I'll bet there is populist resistance to escalation.
Event that tussle alone would look really bad on US, would guarantee the DJT regime probably 'last place' for all US presidents, people would be calling for 25th Amendment and for new leadership, even at the same time as they might even support strikes in response.
It'll mean total political chaos until the Admin steps away, probably Congress/Institutions trying to put a 'bubble' around WH Admin.