Every few moments, Nyameat Nyak glances nervously at the sky. It’s been two weeks since Sudanese warplanes bombed her tea shop as she was serving five traders, pregnant with her sixth child...The men died. Her baby lived...“If we had no oil,” said Nyak...“we would not be attacked.” Tens of thousands of South Sudanese are trapped in a conflict over oil and territory between their newly independent country and their northern neighbor, Sudan. For the past three weeks, Sudanese warplanes have bombed the town of Bentiu, killing 15 civilians and injuring several dozen more, according to the United Nations. From Angola to Chad, Nigeria to Equatorial Guinea, oil and other natural resources have been more bane than blessing, generating conflicts and corruption while millions of Africans languish in poverty...