Omar Al Bashir with South Sudan's President Salva Kiir, left, South Sudanese rebel leader Riek Machar, right, after they agreed to a peace deal in Khartoum in June 2018. AFP
Omar Al Bashir with South Sudan's President Salva Kiir, left, South Sudanese rebel leader Riek Machar, right, after they agreed to a peace deal in Khartoum in June 2018. AFP

Sudan's upheaval shakes South Sudan's hopes for peace