Two weeks after the U.S. ambassador’s controversial visit to a Muslim cleric, Nigeria’s lawless central states were roiled with violence, including several murderous attacks on Christian farmers. Some Nigerian activists are concerned what signal the ambassador has sent about the direction of U.S. policy to Nigeria. Most notable among the incidents of violence, a band…

Two weeks after the U.S. ambassador to Nigeria’s controversial visit to a Muslim cleric, the nation’s lawless central states have been roiled by violence, including several attacks on Christian farmers, sparking concern among activists about the direction of U.S. policy in Nigeria. Most notable among the incidents, a band of alleged Muslim militants attempted on…