since 1975, most of the territory has been part of morocco. in 1973, some sahrawis claimed the moroccans and mauritanians were occupying their land and started a movement. the movement turned violent, and the united nations brokered a ceasefire in 1991. many polisario members and their families became refugees in camps in algeria. the rest of western sahara is controlled by the polisario/sadr, backed by algeria. many important countries have pressed both parties to agree to a peaceful solution. both morocco and polisario have tried to get recognition from other countries. polisario has won formal recognition for sadr from 81 states, and was extended membership in the african union, while morocco has won recognition for its position from the arab league. in both instances, recognitions have over the past two decades been extended and withdrawn according to changing international trends.