International security experts are watching Nigeria’s radical Islamist movement Boko Haram with concern. The militant group has destabilized northern Nigeria and attracted the attention of other jihadist groups, including al-Qaeda affiliates gaining strength in neighboring northern Mali. Boko Haram is highly diffuse. It has an important Islamic revival dimension, but also has political and criminal elements. Little is known about its leader, Abubakar Shekau, including his age, where he was born, or if he can speak English. The movement has issued no formal manifesto. Nevertheless, its various factions do share a common agenda of imposing and rigorously enforcing Islamic law in northern Nigeria; some even want to impose it throughout the country in areas where Christians are the majority. The group is bitterly hostile to the Christian-led secular government in the capital of Abuja, which it accuses of exploiting the poor. Its methods are violent and deadly, ranging from targeted killings to mass deaths resulting from car bombs.