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US Ambassador to the United Nations (UN) Security Council Samantha Power (2nd R) addresses the press, flanked by fellow members of the UN Security Council, after a meeting with South Sudan's president on August 12, 2014 in Juba. UN Security Council ambassadors met the leaders of South Sudan's warring sides on August 12 in a bid to end eight months of conflict that has pushed the young nation to the brink of famine. Brandishing the threat of sanctions, the diplomats arrived in the capital on a two-day visit to "engage with leaders" and witness "the humanitarian crisis first hand," British Ambassador Mark Lyall Grant said. AFP PHOTO / Charles LOMODONG (Photo credit should read CHARLES LOMODONG/AFP via Getty Images)