Havana. Cuba has announced a nationwide emergency plan to avert a fuel crisis following disruptions to its supply caused by the United States. Cuban President Miguel Díaz-Canel unveiled the strategy to manage the fuel shortage at a special press conference on Thursday, effective from next week.The island nation has seen soaring prices for food and transportation, and widespread blackouts after the US threatened heavy tariffs on countries supplying oil to Cuba. President Díaz-Canel described the US actions as