The epicentre of global jihadism is today firmly planted in Africa's Sahel, where extremists are steadily expanding beyond the rural areas where they first sprang roots, killing thousands, roiling governments…

The epicentre of global jihadism is today firmly planted in Africa's Sahel, where extremists are steadily expanding beyond the rural areas where they first sprang roots, killing…

ABIDJAN, June 25 — The epicentre of global jihadism is today firmly planted in Africa’s Sahel, where extremists are steadily expanding beyond the rural areas where they first...