As the Spanish were preparing to leave colonized Western Sahara in 1975, Morocco invaded, sparking a war with the Western Saharan Polisario Front. About 70% of Western Sahara was occupied by Morocco, which stations up to 140,000 soldiers in the territory, primarily along a 1700 kilometre long sand berm that is protected by one of the world’s largest fields of landmines. In 1991, Morocco and t…