INTRODUCTION, EXPLAN THE SITUATION

Sahara  is a territory in North Africa, bordered by Morocco to the north, Algeria to the northeast, Mauritania to the east and south, and the Atlantic Ocean to the west. A war started between Morocco, Mauritania and the Polisario Front (Sahrawi national liberation movement), which proclaimed the Sahrawi Arab Democratic Republic. There is an huge conflict between the Polisario Front of the Sahrawi people and the state of Morocco.


Here you have some links to know more deeply what is going on.
Wikipedia
The economical cost of the conflict
Forced migration
Foreing policy in focus