A woman and her child from the Nuba Mountains in Sudan wait outside of the Yida refugee camp registration center in Yida, South Sudan, on April 25. Sudan declared a state of emergency along its border... more 

A woman and her child from the Nuba Mountains in Sudan wait outside of the Yida refugee camp registration center in Yida, South Sudan, on April 25. Sudan declared a state of emergency along its border with South Sudan on Sunday after month-long border clashes, as four foreigners allegedly arrested in the Heglig oil region remained in custody less