Donald Trump threatened to take control of Cuba after a US oil blockade caused the total collapse of the national power grid.The electrical crisis worsened after the capture of Nicolás Maduro in Venezuela ended fuel subsidies and prompted Petrobras to halt shipments.Washington reportedly demanded the resignation of Miguel Díaz-Canel as a condition for negotiations regarding energy and port agreements.Oscar Perez-Oliva Fraga confirmed that the government is now inviting exiles and Cuban Americans to invest in domestic businesses.