Jonglei revolt gives South Sudan a security headache

A heavy-handed government disarmament campaign to halt tribal clashes in South Sudan's swampy eastern grasslands has triggered a small armed revolt against the rulers of the world's newest state, threatening planned oil exploration in the area.

The budding insurgency in Jonglei state led by Murle militia chief David Yau Yau, a former theology student, may not number more than a few dozen fighters.