More than a year of siege in the western Sudanese city of El-Fasher has forced some civilians to turn to animal skins for food as the country's war grinds on.El-Fasher is the last major holdout in the vast western Darfur region against the paramilitary Rapid Support Forces (RSF), at war with the regular army since April 2023.With the RSF's nearly 18-month siege cutting off humanitarian aid to the city -- home to 400,000 trapped civilians -- El-Fasher has run out of almost everything.'After not eating for...