Cuba is experiencing a critical fuel shortage, largely due to the U.S. oil blockade, leading to widespread blackouts, food shortages, and a halt in international flights. With the situation worsening, Russia is preparing to evacuate its tourists from the island and has announced plans to send crude oil and fuel to assist. Airlines are struggling to operate as they can no longer refuel in Cuba and have begun suspending flights, while some Canadian airlines cancel services amid fears of stranded tourists. The United Nations has warned of potential humanitarian collapse in the country, where essential services are now threatened by the choking of oil supplies.