Canada has updated its travel advisory for Cuba, urging travellers to exercise a high degree of caution as the Caribbean country faces worsening shortages of electricity, fuel and basic necessities, including at resorts. “The situation is unpredictable and could deteriorate, disrupting flight availability on short notice,” the notice said. To reduce pressure on the electrical network, Cuba schedules long daily power cuts, but Ottawa says unexpected nationwide outages can also occur and may last