For three years, this Arab shepherd says, he was forced to raze the villages of black Africans in DarfurOUTSIDE the back window Bakerloo Line trains rattle past. Downstairs someone makes tea. But in the upstairs living room of a nondescript house off Lambeth Road in South London a slight, softly spoken young man tells a story of atrocities in a far-off land that is anything but mundane. Dily, a Sudanese Arab, recounts how for three years he and his fellow Janjawid charged the farming villages of Darfur on their camels and horses, raking the huts with gunfire and shouting: “Kill...