The Western Sahara conflict remains an ongoing point of contention for Morocco that impacts its stability and relationship with the United States. After Spain withdrew from the territory in 1975, Morocco occupied it, sparking a war with the pro-independence Polisario Front. A 1991 ceasefire divided the region into occupied and liberated zones separated by Morocco's Berm, the largest functional military barrier in the world. The United States has provided significant military aid to Morocco over the years. While the United States has a strategic interest in Moroccan stability, it also has an interest in resolving the Western Sahara issue to reduce risks of terrorism and criminal activities emerging in the region. The military history of the conflict provides lessons