The Cuban government has announced emergency measures to address a crippling energy crisis worsened by US sanctions, including the adoption of a four-day work week for state-owned companies and fuel sale restrictions.Deputy Prime Minister Oscar Perez-Oliva Fraga blamed Washington for the crisis, telling Cuban television that the government would "implement a series of decisions, first and foremost to guarantee the vitality of our country and essential services, without giving up on development”."Fuel will be used to protect essential services for the population and indispensable economic activities," he said."This is an opportunity and a challenge that we have no doubt we will overcome," Perez-Oliva said. "We are not going to collapse."Among the new measures are the reduction of the working week in state-owned companies to four days, from Monday to Thursday; restrictions on fuel sales; a reduction in bus and train services between provinces; and the closure of certain tourist establishments.School days will also be made shorter and universities will reduce the requirement of in-person attendance.These measures are intended to save fuel in order to promote "food and electricity production" and enable "the preservation of fundamental activities that generate foreign currency", said Perez-Oliva Fraga.The government will supply fuel to the tourism and export sectors, including for the production of Cuba's world-famous cigars, to ensure the foreign exchange necessary to fund other basic programmes, he said, adding: "If we don't have income, then we will not overcome this situation."Domestic and international air travel will not be immediately affected by the fuel rationing, although drivers will see cutbacks at the pump until supply normalises, he said.Perez-Oliva also announced an ambitious plan to plant 200,000 hectares (500,000 acres) of rice to guarantee "an important part of our demand", but acknowledged fuel shortfalls would push the country to depend more on renewable energy for irrigation needs and animal-power for tilling fields.Education Minister Naima Ariatne, appearing on the same programme, said infant-care centres and primary schools would remain open and in person, but secondary schools and higher education would implement a hybrid system that would require more "flexibility" and vary by institution and region."As a priority, we want to leave (open) our primary schools," Ariatne said.Top officials said healthcare would also be prioritised, with special emphasis on emergency services, maternity wards and cancer programmes.The island of 9.6mn inhabitants, under US economic embargo since 1962, has been mired in a severe economic crisis for six years.Washington has increased pressure on its communist government in recent weeks.The United States cut off oil deliveries from Havana's key ally Venezuela following its ouster of president Nicolas Maduro in early January.US President Donald Trump also signed an executive order last week allowing his country to impose tariffs on countries selling oil to Havana.Trump said that Mexico, which has been supplying Cuba with oil since 2023, would stop doing so – under threat of US tariffs.The oil shortages have threatened to plunge Cuba into complete darkness, with power plants struggling to keep the lights on.Washington has long sought to overthrow or weaken the communist-led Cuban government.Havana accuses Trump of wanting to "strangle" the island's economy, where power cuts and fuel shortages, already recurrent in recent years, have become even more acute.This week, Cuban President Miguel Diaz-Canel said his country is willing to hold talks with the United States, but not under pressure.He said any talks must take place "from a position of equals, with respect for our sovereignty, our independence and our self-determination" and without "interference in our internal affairs”.