Millions of people were left without power in Cuba on Wednesday - the latest in a string of blackouts to hit the island as it struggles with fuel shortages worsened by pressure from the US. Two-thirds of the island was plunged into darkness following what officials described as an "unexpected" shutdown at one of the country's main power plants. Cuba's national electricity company UNE said the blackout affected a vast area stretching from the central province Camaguey to Pinar del Rio in the