New York Times: In Niger, government officials have fought a Chinese oil giant step by step, painfully undoing parts of a contract they call ruinous. In neighboring Chad, they have been even more forceful, shutting down the Chinese and accusing them of gross environmental negligence. In Gabon, they have seized major oil tracts from China, handing them over to the state company. China wants Africas oil as much as ever. But instead of accepting the old terms, which many African officials call unconditional surrender,...