Salva Kiir

U.N. Secretary-General Ban Ki-moon is the latest in a string of international officials trekking to South Sudan to try and pressure rival leaders to call a halt to their four-month long civil war. Reporter Andrew Green is in the capital Juba and tells host Marco Werman that he sees a sliver of hope in efforts to end the fighting.U.N. Secretary-General Ban Ki-moon is the latest in a string of international officials trekking to South Sudan to try and pressure rival leaders to call a halt to their four-month long civil war. Reporter Andrew Green is in the capital Juba and tells host Marco Werman that he sees a sliver of hope in efforts to end the fighting.