Although we think that the Sudan issue is settled, this is very much not the case. There is disputed territory that is claimed by north and south Sudan. The territory is Ayei and the north has just invaded the region, which means that there is tension on the border. Abyei is a mineral rich region which is why there is a dispute.
As far as I am aware, Sudan is under the control of the UN. I am not sure if the US has forces committed to Sudan. So it might be worthwhile keeping this one on your watch list.
Any further posts on Sudan will be on my other blogs.