Emmauel Katongole is a Catholic priest from Uganda, born in 1960, who lived through the reign of Idi Amin and has seen the postcolonial struggles of his home country and its sub-Saharan neighbors -- Rwanda, the Congo, Zimbabwe, Liberia, and others -- up close and personal. Looking at this region, ravaged by war, corruption, terror, genocide, and disease, Katongole wonders at length what difference Christianity makes -- or could make -- in numerous...