YIDA, South Sudan (AP) — An unexploded bomb sticks out of the earth. Foxholes have been dug by aid workers fearing more airstrikes from Sudan. Streams of hungry refugees are pouring in.

South Sudan is facing a humanitarian crisis with more than half its population threatened by food shortages because of its ongoing conflict with Sudan, the UN has warned.

Commentary: Rape and domestic violence are all too common for females who fled Nuba Mountains.