DHAKA: US President Barack Obama has warned that South Sudan is on the "precipice" of a civil war, after clashes in the capital Juba spread around the country.
He said 45 military personnel had been deployed to South Sudan on Wednesday to protect American citizens and property.
At least 500 people are believed to have died since last weekend, when President Salva Kiir accused his ex-deputy Riek Machar of a failed coup.
An estimated 34,000 people have taken refuge at United Nations compounds.
Three Indian peacekeepers were killed on Thursday when a UN base sheltering refugees came under attack near South Sudan`s eastern border with Ethiopia.
Sudan suffered a 22-year civil war that left more than a million people dead before the South became independent in 2011.
UN spokesman Farhan Haq: "We condemn this attack in the strongest terms``
The recent unrest has pitted gangs from the Nuer ethnic group to which Mr Machar belongs against Dinkas, the majority group to which Mr Kiir belongs.
"South Sudan stands at the precipice. Recent fighting threatens to plunge South Sudan back into the dark days of its past," President Obama said in a letter to Congress.
"Inflammatory rhetoric and targeted violence must cease. All sides must listen to the wise counsel of their neighbours, commit to dialogue and take immediate steps to urge calm and support reconciliation."
Source:BBC
BDST: 1437 HRS, DEC 20 , 2013
RS