Sudan's Rapid Support Forces have attacked the famine-stricken Zamzam displacement camp, residents and medics say, as the paramilitary tries to tighten its grip on its Darfur stronghold while losing ground to the army in the capital, Khartoum. The latest fighting has hardened battle lines between the two forces in a conflict that threatens to splinter Sudan after plunging half the population into hunger and displacing more than one-fifth since April 2023. This week, as it