Data lays bare the extent and geographical spread of attacks in Africa’s most populous country Data from Acled and the Global Terrorism Index shows that after a few years of improvement, insecurity in Nigeria has worsened. With general elections less than a year away, the crisis has come under increasing scrutiny – both abroad and at home. Experts say the primary long-term driver of insecurity is a governance vacuum across much of the country. On paper Nigeria is a federation comprising 36