It's best to think of these as two things - they're related, but there's different dynamics going on with each of them. A key difference is Abyei is contested territory. We still do not know whether Abyei is going to belong to the new country of South Sudan or effectively the new country of Sudan, the northern part. That was supposed to be decided by a referendum in January; that referendum never happened, so it was being dealt with through political negotiations.

Southern Kordofan is not a disputed territory. It is, and will remain, in the north, where the Nuba Mountains are. People believe there was a genocide there in 1990s. The Nuba, who are northerners, fought with the south in the north-south war. But they have their own individual interests, and they will remain in the north after the south splits.

Strikingly consistent across all of the battles in Sudan's history has been a fundamental conflict over what are and what are not seen as legitimate aspects of Sudanese identity.

I think people felt like they did everything they had been told they should do to fix the problem, and it still wasn't fixed. Then you have these other parts of Sudan, [which] in actual fact have been left on the back burner for way too long, so there was this scramble, probably a year ago now, to focus on the fact that this peace agreement was basically falling apart.

o this idea that we fail to stop these things because there's not awareness about them, or that we need better early warning information, I'm increasingly skeptical of.

During the civil war, the Sudanese government armed the Misseriya nomads as proxy. Even though both groups had coexisted quite well prior to the conflict, it all become much more difficult as a consequence.

It's best to think of these as two things - they're related, but there's different dynamics going on with each of them. A key difference is Abyei is contested territory. We still do not know whether Abyei is going to belong to the new country of South Sudan or effectively the new country of Sudan, the northern part. That was supposed to be decided by a referendum in January; that referendum never happened, so it was being dealt with through political negotiations.