The Russian tanker Anatoly Kolodkin entered Cuban waters carrying 730,000 barrels of crude oil after the US Coast Guard permitted the vessel to bypass a maritime blockade.This arrival marks the first major fuel shipment to reach the island since January, providing critical relief for an economy crippled by power outages and rationing.The administration of Donald Trump had previously enforced strict sanctions to pressure Miguel Diaz-Canel after the loss of Venezuelan oil following the capture of Nicolas Maduro.Energy experts estimate the cargo will provide enough diesel to sustain essential services for nearly two weeks as Havana manages a deepening humanitarian crisis.