Growing humanitarian concerns for Sudan and South Sudan

Weeks of border clashes between Sudan and South Sudan have led to fears that the two nations could end up in all-out war.

The UN Security Council has unanimously adopted a resolution that threatens both countries with sanctions if they do not stop fighting and return to negotiations within 48-hours.

Away from the frontline, a humanitarian crisis is growing elsewhere in the border region, as thousands of people attempt to avoid the violence.

Andrew Harding reports from South Sudan.