Sudanese rebels have driven government forces from El Fasher, the last stronghold of the country’s regime in the western Darfur region, amid a brutal struggle for territory that has led to alleged genocide and contributed to one of the world’s most severe humanitarian crises.

Rapid Support Forces militia killed rival ethnic groups after previous victories

The Sudanese army controls Khartoum, strategic Port Sudan on the Red Sea and other parts of the east, while the rebels, called the Rapid Support Forces, hold the western and central regions.