Terrorism and organized crime rampant in Sahel and spilling into West Africa coastal states, UN says

Read MoreA U.N. envoy says terrorism and organized crime by violent extremist groups linked to al-Qaida and the Islamic State are a “pervasive threat” in Africa’s volatile Sahel regionA U.N. envoy says terrorism and organized crime by violent extremist groups linked to al-Qaida and the Islamic State are a “pervasive threat” in Africa’s volatile Sahel region