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.