United Nations High Commissioner for Refugees Antonio Guterres shakes hands with internally displaced Sudanese children at Riyad camp in west Darfur region of Sudan August 24, 2005. Guterres is on a ten-day mission to visit UNHCR operations in Darfur region of Sudan, [Chad, southern Sudan and Kenya.] The Commissioner will also assess the situation in southern Sudan where UNHCR is planning to help return home some 500,000 refugees who fled the 21-year long [war].