The only Darfur rebel group to sign a peace agreement with the government threatened Tuesday to pull out from the deal if Khartoum-backed militias continue to attack civilians in the troubled region. The ultimatum from Minni Minawi, head of the main branch of the Sudan Liberation Movement, came a day after the pro-government janjaweed paramilitary looted the central market in El Fasher, the capital of North Darfur, and clashed with SLM fighters, killing at least two. Full Story