The oil-rich Abyei region is jointly administered by South Sudan and Sudan, with both nations maintaining competing territorial claims and experiencing frequent inter-ethnic or militia clashes

From the articleDrone strike in disputed Sudan-South Sudan area kills dozens, minister saysAlso in Drone strike in disputed southern Sudan area kills at least seventy, minister says, Drone Strike in Disputed Sudan-South Sudan Area Kills Dozens, Minister Says, Drone strike in disputed Sudan-South Sudan area kills dozens, minister says, Drone strike in disputed Sudan-South Sudan area kills dozens, minister says | Reuters