The 2020–2021 Western Saharan clashes, also called the Guerguerat crisis and Moroccan military intervention in Guerguerat is an armed conflict between Morocco and the self-proclaimed Sahrawi Arab Democratic Republic (SADR), represented at the United Nations by the Polisario Front, in the disputed region of Western Sahara. It was the latest escalation of an unresolved conflict over the region, which is largely occupied by Morocco, but 20–25% of which it is administered by the SADR. The violence ended a ceasefire between the opposing sides that had held for 29 years in anticipation of referendum on self-determination that would have settled the dispute. Despite the establishment of the United Nations Mission for the Referendum in Western Sahara in 1991, the referendum was never held.