A top official of the UN’s refugee agency, Filippo Grandi, has called on the South Sudan leaders to end the suffering of their people.
Mr Grandi was addressing the media after meeting refugees in western Uganda.
UN agencies estimate that more than 80,000 have arrived in Uganda since the recent outbreak of fighting in the country.
He said: “The leaders of that young country have to behave responsibly.”
“But we must proclaim praise for Uganda. Its doors stay open to refugees. It wants to make them self-reliant. More international support is needed,” he added.
Forces loyal to rival politicians clashed in the capital, Juba, last month, appearing to derail the peace process aimed at ending the country’s civil war.