ຊູດານໃຕ້ ກ່າວຫາ ສປຊ

United Nations Secretary-General Ban Ki-moon gestures during a press conference in the Philippines on Sunday Dec. 22, 2013, at which he expressed grave concern about the deteriorating security situation in South Sudan.

President Salva Kiir says UNMISS stopped short of appointing its chief, Hilde Johnson, shown here holding a video news conference from Juba, South Sudan on Dec. 26, 2013, 11 days after the violence in South Sudan began, as "co-president."

Civilians fleeing violence seek refuge at UN compound in Bor, Jonglei state, South Sudan, Dec. 18, 2013. The U.N. says 70,000 people have sought refuge at its bases.

A displaced woman stirs fortified cereal mix at the U.N. compound where she has sought shelter in Juba, Dec. 23, 2013.

The U.N.'s top humanitarian official in South Sudan, Toby Lanzer, assesses the situation at the U.N. compound where many displaced have sought shelter in Bentiu, Unity state, South Sudan, Dec. 24, 2013. (UNMISS)

Handout photo taken Dec. 20, 2013 released by UN Mission in South Sudan (UNMISS) shows the remains of two UN soldiers from the Indian Battalion who were killed in an attack on a U.N. base in Akobo, in Jonglei state. (AFP Photo /UNMISS/Rolla Hinedi)

South Sudan's President Salva Kiir gestures during a news conference in Juba, Dec. 18, 2013. Kiir says the U.N. Mission in South Sudan was set up as a parallel government to his.