Ramiro Valdes, one of Fidel Castro’s earliest collaborators who was lauded at home as a hero of the Cuban revolution, has died at the age of 94, President Miguel Diaz-Canel said on social media on Sunday.The president did not provide a cause of death.A top government official for decades after Castro’s rebels came to power in 1959, Valdes held the honorary titles “Hero of the Republic” and “Commander of the Revolution” and formed part of the powerful Political Bureau of the ruling Cuban...