Fulgencio Batista was the leader of the Cuban people or other known as the country called Cuba. The new communist government is ruled by Fidel Castro and his brother Raul Castro.
Article VI of the US Constitution allows for the equal status of treaties that the US enters into with laws passed by Congress. As a result, the Law of Armed Conflict is considered law for all bound by US law including and especially the US military and as a result, the US has decided to apply the Law to all military operations.