4 soldiers killed in ambush: Where is Niger and what are U.S. troops doing there?
Published: Friday, October 20, 2017 @ 11:38 AM
This Feb. 6, 2013, file photo shows French armoured vehicles heading towards the Niger border before making a left turn north in Gao, northern Mali. American and French forces have spent years providing training and support to the militaries of Mali, Niger and other vulnerable countries in this corner of Africa where Islamic extremism has become entrenched over the past decade.(AP Photo/Jerome Delay, File)