Cuba is suffering from a complete depletion of fuel reserves as residents endure daily power cuts lasting up to 22 hours.Protesters in Havana have taken to the streets to demand electricity following the collapse of the national energy grid.Miguel Diaz-Canel rejected a 100 million dollar aid package from the US, blaming the current crisis on a strict blockade.Washington argues that the energy shortages are caused by internal economic mismanagement rather than external sanctions.