Opinion: As Trump eyes Cuba, my trips there a decade ago remind me how different things were

Trump has threatened a 'friendly takeover' of Cuba after cutting it off from Venezuela's oil. CNBC's Justin Solomon reflects how different things used to be.

The White House has choked off Cuba's oil supply and threatened a "friendly takeover" of the communist-run island, against a backdrop of military operations in Venezuela and Iran.

U.S. President Donald Trump is implying the country is his next target, saying: "Whether I free it, take it,  I think I can do anything I want with it. They're a very weakened nation right now." The oil shortage is bringing Cuba's economy to the brink. But I've found myself thinking back when, not that long ago, it briefly looked like the two nations would normalize relations after decades of hostility.

I first landed in Havana in March 2012 to cover Pope Benedict XVI's visit. The airport was small. I had to repeatedly explain to immigration officials that we were there as journalists, that we had permission, and that everything had been cleared in advance. I was grateful that my team spoke Spanish to help with the process.