Borders and boundaries draw friction in South Sudan

GOK MACHAR, South Sudan - Teresa Abuk was boiling tea in the market of Kiir Adem, a town astride the de facto border between Sudan and South Sudan, when a white aircraft flew overhead.
Everyone panicked. Some ran, others fell to the ground. A minute later the plane returned and dropped at least three bombs, injuring Abuk's seven year-old daughter, she said.
"The pieces from the bomb exploded and the metal hurt my child's elbow and back," she told Reuters in a hospital in Aweil, capital of South Sudan's Northern Bahr el Ghazal state.