Jihadists are murdering, raping, torturing, kidnapping, enslaving, and, in some instances, burning people alive — across Africa, and now in Syria. Local jihadist organizations go by different names, but the ideology that drives them is the same: Every one of them deeply believes that Allah wants him to wipe the world clean of the kuffar (infidels). More than 16.2 million Christians in Sub-Saharan Africa have been driven from their homes by jihadi violence and conflict, reports the human rights organization Open Doors. Women and girls are abducted, forced into "marriage," forced to convert to Islam, raped, and subjected to forced...