U.N. chief in South Sudan, keeps up pressure for peace

U.N. Secretary-General Ban Ki-moon (C) carries a child displaced by the region's conflict during his visit to an IDP (internally displaced persons) camp in the United Nations Mission in South Sudan (UNMISS) base at Thong Ping in Juba May 6, 2014. REUTERS/Andreea Campeanu

JUBA (Reuters) - U.N. Secretary General Ban Ki-moon flew into South Sudan on Tuesday to urge government troops and rebels to end more than four months of fighting - the second peace mission there by a major global figure in less than a week.

Ban was expected to meet South Sudanese President Salva Kiir, part of a mounting international push to stop the increasingly ethnic violence that Washington and regional powers fear could descend into genocide.