”The United States has threatened to stop financial aid to other countries if they trade non-food items with Cuba.”
"While the US measures against Cuba do not amount to a blockade in a technical or formal sense, their cumulative effect is to put an economic stranglehold on the island, which not only prevents the United States intercourse but also effectively blocks commerce with other states, their citizens and companies."
”Despite the existence of the embargo, Cuba can, and does, conduct international trade with many countries, including many US allies; however, US-based companies, and companies that do business with the US, which trade in Cuba do so at the risk of US sanctions.”
Entropy is not a "distribution”, it's a functional that maps a probability distribution to a scalar value, i.e. a single number.
It's the mean log-probability of a distribution.
It's an elementary statistical concept, independent of physical concepts like “pressure”, “potential”, and so on.