Human Rights Watch claimed the government has only succeeded in pumping oil in southern Sudan through a scorched-earth policy involving ethnic displacement and mass detruction.

"Oil development in southern Sudan should have been a cause of rejoicing for Sudan's people," said Jemera Rone, a Sudan researcher for the group. "Instead it has brought them nothing but woe."

A report called Sudan, Oil and Human Rights, released this week, investigates the role oil has played in Sudan's civil war.