Yei River State ni mojawapo kati ya majimbo 32 yanayounda Sudan Kusini. Imegawanyika katika kaunti 10: Kindi County, Otogo County, Tore County, Wuji County, Yei River County, Morobo County, Kajo-Keji County, Kupera County na Lainya County. Machar forces easily defeat SPLA troops at Uganda border. The Red Times (10 August 2016). Jalada kutoka ya awali juu ya 2016-10-18. Iliwekwa mnamo 14 August 2016.