Michael Totten did, and he found a police state overseeing wrenching poverty, complete with shortages for essentials and goods of retched quality.
In short: Communism.
Let's not forget that the best estimates for the death of communist regimes killing their own people is right around 100 million people. Both The Black Book of Communism and R.J. Rummel's Death by Government come up with roughly the same number of people killed.
Communism is incompatible with both human rights and a healthy economy, and never has, never can, and never will meet the needs of its own people or offer better lives than those under capitalism.
Embargoes have nothing to do with it...