“Since the war began, two of my children have walked 14 kilometres (nine miles) daily to get water for the family,” says Issa, a father of seven from North Darfur state. In the blistering sun, as temperatures climb past 40 degrees Celsius (104 degrees Fahrenheit), Issa’s family — along with 65,000 other residents of the Sortoni displacement camp — suffer the weight of the war between Sudan’s army and the paramilitary Rapid Support Forces (RSF). When the first shots rang out more than a year ago, most foreign aid groups — including the one operating Sortoni’s local water station — could no long…