In Sudan, a landmark office tower in the capital Khartoum caught fire and burned for hours Sunday amid fierce fighting between Sudan’s army and the rival paramilitary Rapid Support Forces. The fire ravaged the 18-story Greater Nile Petroleum Company Tower. Several government buildings also caught fire as paramilitaries launched attacks on positions controlled by the army. Residents report it was some of the worst fighting since violence between factions of the military junta erupted on April 15. Medical authorities report all the main hospitals in Khartoum — and in Sudan’s western Darfur region — were out of service on Sunday.