Dhaka, Oct. 29 -- Sudan's two-year war has reached a critical turning point after the Rapid Support Forces (RSF) seized full control of Darfur, ousting the army from its final stronghold in the region. The takeover of El-Fasher, North Darfur's capital, has heightened concerns that the country could fragment, nearly 15 years after South Sudan's independence.

Led by Gen. Mohammed Hamdan Dagalo, known as Hemedti, the RSF evolved from the Janjaweed militia, accused of atrocities during the early 2000s Darfur conflict that left about 300,000 dead and millions displaced. Originally backed by former ruler Omar al-Bashir, Hemedti built his power base through gold mining and regional alliances, deploying fighters to conflicts in Yemen and Libya w...