Malian refugees sit on a bench at the Mbera refugee camp in southeastern Mauritania on September 29, 2017. - It is hardly the most inviting place to call home -- a sprawling tent city in a sea of reddish sand in southeastern Mauritania. But for the Malians who eke out a life here, the harsh Saharan desert is a haven compared to the violence and chaos back home. (Photo by SELIM SAHEB ETTABA / AFP)