FILE - In this Monday, Dec. 23, 2013 file photo, a young man reacts after his friend was badly injured by passing Chadian troops, during a protest outside Mpoko Airport in Bangui, Central African Republic. Sub-Saharan Africa has seen a very violent start to 2014 with raging conflicts in South Sudan and Central African Republic - the death tolls are huge and the individual incidents gruesome, with one estimate saying nearly 10,000 have been killed in South Sudan in a month of warfare. (AP Photo/Rebecca Blackwell, File)
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