Well, it really depends on what exactly you're looking for. Really, the best country to move to is the one where you have a job and a backup lined up. Look around the foreign job market, see if something matches up with your skills. English is a really common language, so sometimes you won't even need to learn the language to get your foot in the door. You will probably need to learn the language of the country you go to, though.

Be careful though, just because it's not America doesn't mean it's safer, and just because it's safer now doesn't mean it'll be safer later (like of the US coups or invades the country you picked, or any multitude of other events that could make the situation unstable).

I imagine you want somewhere that's more amenable to you politics as well, so I would go with either Vietnam or China. Cuba is very cool, but sanctions have cut it off enough that it might be difficult to find work with the America-centric skills you have. With Vietnam and China, they aren't really sanctioned the way Cuba is. You could easily work on most American projects in China, and they probably have domestic equivalent to basically everything we have here. If you want a lot of the benefits of China, but without the great firewall or other minor inconveniences, Vietnam is a nice option. You could also go to Hong Kong or one of the other formerly colonized cities, they have a lot of the benefits of China, with many of the conveniences of the West.

Ultimately, you should do a lot of research. Moving countries is one of the more difficult things a person can do, especially if you want to live there long-term. Research your family history, research the job opportunities (plenty of people will be willing to scam you, and might not even live in the country the claim to. over the internet, anything is possible), research medication (some medication isn't legal, or is really hard to get, in some parts of the world), and make sure this is really what you want.

Also, if you do move to a foreign country, try to keep your American citizenship (assuming you have one). Even if you don't want to live in America, and disagree with most everything America does, American citizenship and an American passport are very powerful. As an American, it's easier to get visas for other countries, border checkpoints are a little bit easier to get through, and American citizenship grants a number of legal protections. Your passport is also your lifeline if you ever need to get out, for some reason. The American consulate in most countries is fairly helpful.