Why nerves are jangling on the border between Ethiopia and Sudan

AT FIRST SIGHT it looks an unremarkable place. Open savannah scattered with thatched-roof homesteads. Bumpy and unpaved roads. Upturned soil that appears rocky and blackened.But then come Sudanese soldiers. One is on a tractor. Another walks through a field, cigarette in one hand, rifle in the other. Tanks face east towards Ethiopia.