Top Ethiopian dissidents return home after years in exile
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In tonight's edition: Ethiopian opposition leader Berhanu Nega returns home after 11 years in exile and says he's ready to work with the government. In Niger, the CIA gears up to launch anti-terror operations against extremist militants from a new air base. And, as millions around the globe gear up for World Cleanup Day, our reporters meet those in South Africa rolling up their sleeves.