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.

Every indication is that the Sudanese government will be defining it as an Arab, Muslim country. But there are also a lot of Christians and a lot of people, like the Nuba, who are not Arab. And that is why it is going to be problematic that Sudan will be defined in this way.

There's a bigger question again about how to do prevention. It's not simply about putting out the early warning. The early warning was put out on Abyei; everybody knew that this was coming. This was intentional, and still it happened. So 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. I think it's about how you move that information into the policy process.

I try not to cover Sudan from afar. I feel really uncomfortable writing about Sudan when I'm not there. It always looks different. When you're outside Sudan it's easy to lose sight of how much of what happens is driven by local politics. And when you're in America in particular, there's this sense that what D.C. has to say is the only thing that counts. Unsurprisingly people in Sudan don't feel the same way.

What's really interesting, though, is that some people in the Messirya are starting to see Darfuri rebels - so non-Arab, [from the] Justice and Equality Movement - have moved over into Southern Kordofan, which is supposed to be a Messirya stronghold, and started recruiting Messirya to go and fight against the Khartoum government in Darfur. Just another example of how everything in Sudan is interlinked.

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.

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.