The Insurgency in the Maghreb refers to Islamist militant and terrorist activity in northern Africa since 2002, including Algeria, Mauritania, Tunisia, Morocco, Niger, Mali, Ivory Coast, Libya, Western Sahara, and Burkina Faso, as well as having ties to Boko Haram in Nigeria. The conflict followed the conclusion of the Algerian Civil War as a militant group became al-Qaeda in the Islamic Maghreb (AQIM). Their tactics have included bombings; shootings; and kidnappings, particularly of foreign tourists. In addition to African units, the fight against the insurgency has been led primarily by the French Foreign Legion, although the U.S. also has over 1,300 troops in the region. Four American soldiers were killed in the October 4, 2017 Tongo Tongo ambush in Niger.