A heavily armed group has been ruling this remote Nigerian area through fear for years. The Lakurawa jihadists, based in camps around Tangaza in Sokoto state near the Niger border, impose strict rules on local villages like Nukuru. These militants, linked by officials to Islamic State factions in the Sahel, dress in camouflage with colorful turbans. They communicate in Hausa and Fulfulde. Locals, mainly moderate Muslims, are terrified of reprisals for speaking out. The fighters tax residents, steal livestock for noncompliance, and ban activities like playing music on phones, punishing offenders with flogging. Their presence has created a climate of deep suspicion, with even Nigerian police avoiding the area due to insufficient...