There really is only one country in the world that believes that the embargo is justified (Israel probably does not really care either way). The embargo starte

There really is only one country in the world that believes that the embargo is justified (Israel probably does not really care either way). The embargo started because the US did not want communist regimes in their backyard. As a reaction the Cubans nationalized all US companies and property. There is a powerful lobby in the US against lifting the embargo.