South Sudan, world's newest nation, is instantly one of the most troubled

Africa's longest civil war gives birth to South Sudan, which has broken away from its bitter antagonist to the north. Heads of state gather for a euphoric celebration in the capital of Juba, but poverty, corruption and questions about its leadership already plague the new nation. The countdown clock ran out, the flag ascended over the fledgling capital and a new nation born from Africa's longest ...