The US is not enforcing a blockade, it's an embargo. The US and other countries are refusing to trade with Cuba, but plenty of other countries can and do trade with Cuba. Cuba is not entitled to trade with the US.
A blockade is when a country stops traffic, from entering a country's ports. It's an act of war, and a totally different thing from an embargo.
A blockade is when a country stops traffic, from entering a country's ports. It's an act of war, and a totally different thing from an embargo.