فإن كل مواطن جنوبي يفقد حقه في الإقامة بالشمال بعد نصف دقيقة من إعلان الانفصال.

Elwad is right and in fact, the post referendum arrangements are being worked out as we speak. For your information, there are more Northerners in the South per capita than Southerners in the North. In some instances, in cities like Wau and Malakal and even Juba, the numbers of Northern residents are disproportionately high in comparison to the Southerners. This issue cannot be used as a bargaining posture because it goes either way. Those are jus soli Sudanese citizens albeit the apparent flight of Southerners for basic constitutional rights.

By the way Isa'haq and Eltheib Mustafa are the most read by the Southerners. Both are called blessing in disquise. Go figure that out!!!