evidence: Ongoing war in Sudan stalls progress in disputed Abyei region The ongoing conflict between rival militaries in Sudan has stalled progress towards the determination of the final status of the disputed oil-rich Abyei region which straddles the Sudan-South Sudan border, the head of UN peacekeeping operations said on Tuesday. [...] The situation in Sudan has also exacerbated intercommunal tensions in Abyei, highlighted by recent clashes over cattle rustling that resulted in multiple fatalities among the Misseriya and Nuer communities.