Northern Nigeria Factsheet – Violent Islamist groups based in northern Nigeria remain some of the deadliest and most formidable jihadist groups operating in the world today. Estimates suggest that conflict with groups like Boko Haram and the Islamic State in West Africa Province has resulted in the deaths of more than 37,500 people since 2011, and there is a reasonable basis to believe that these groups have committed war crimes and crimes against humanity. This factsheet explores the current array of violent Islamist groups operating in northern Nigeria, the religious freedom violations they have committed in the past year, and the state of counterterrorism efforts in the country.