The warning comes as Cuba was plunged into darkness by an island-wide power outage.

Cuba says Cubans abroad – including Miami – can invest and own private businesses as talks with the US advance.

Cuba is open to having a fluid commercial relationship with U.S. companies" and "also with Cubans residing in the United States and their descendants," Deputy Prime Minister Oscar Pérez-Oliva Fraga said in an interview in Havana.

Donald Trump said Sunday (March 15) that the United States could soon reach a deal with Cuba or take other action, signaling that developments in the long-strained relationship may come quickly. Could this zero-gravity gym help astronauts stay fit in space?

President Donald Trump said Cuba wants to make a deal with the US, but that he wants to finish the war in Iran before turning to the island nation.