Every week, The WorldPost asks an expert to shed light on a topic driving headlines around the world. Today, we look at how Nigerian militant group Boko Haram is structured and what this means for efforts to free the Chibok schoolgirls. In the week since the Nigerian government announced a ceasefire deal with militant group Boko Haram, insurgents continued to wage a bloody campaign in northeast Nigeria. Nigeria said the secret deal, revealed on Oct.