In October 2012, I traveled to South Sudan to build and encourage the team needed to finish Guinea worm eradication.

WHITEHOUSE: Dream Big: Water

South Sudan accuses Sudan of arming Yau Yau's rebellion in order to block South Sudan's plans to build an oil pipeline through Ethiopia to a port in Djibouti.

NPR: South Sudan Military Says 163 Killed In Clashes

Their livelihoods and cultural existence are at stake with the government's plan to build a mega port and transport corridor linking Lamu to South Sudan and Ethiopia.

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Alex de Waal, who is advising the African Union mediation panel for South Sudan and Sudan, wrote this week that such a pipeline might take three years to build.

BBC: South Sudan in Kenyan oil pipeline deal