The world is full of dictators, one of them just a few miles from Florida, yet the USA only seems interested in dictators with plenty of oil.
You fool no one.
I'm not naive about Trump's motivations, he tried to destroy democracy in the US after all. But it doesn't bear on my interpretation of the outcome of this event, which is what I am happy about. Call it a coincidental alignment of self-interest with what's best for the people inside Venezuela.
I wouldn't be so sure about the longevity of the Cuban regime right now.
The US has many voters of Cuban origin, and the vast majority of those would be happy with a regime change in Habana.
Rubio is a well-known Cuba hawk and Trump is crazy enough to try.