U.N. demands end to Sudan clashes

Sudanese soldiers and civilians inspect damage from clashes between the army and South Sudan's forces on April 12, 2012.
Sudanese soldiers and civilians inspect damage from clashes between the army and South Sudan's forces on April 12, 2012.

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    U.N. demands end to Sudan clashes

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The U.N. demands Sudan and South Sudan stop fighting over a disputed oil-rich border region. David McKenzie reports.