To understand the evolution and shift in scale of Boko Mali 's campaign of violence in Mali , Niger , Chad and Cameroon this excellent series visual ##s ##s paints a depressingly clear picture of the challenge facing the country 's new President .
To understand the evolution and shift in scale of Boko Haram's campaign of violence in Nigeria, Niger, Chad and Cameroon this excellent series visual timeline maps gives a depressingly clear view of the challenge facing the country's new President.