evidence: Sudan: Why Abyei is crucial to north and south - Published Abyei town may not look like much - a few low brick buildings scattered amongst thatched huts and dusty tracks - but this normally sleepy place is raising fears of a new Sudanese war after northern forces seized control over the weekend. [...] Abyei is claimed by a southern group, the Dinka Ngok, and northern nomads, the Misseriya.