A bomb blast and explosions that followed killed more than 70 people and injured more than 120 on Monday near Nigeria's capital, Abuja. Early speculation is that the attack was the work of the Boko Haram extremist group. /EPA/Landov hide caption

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In this photo released by China's Xinhua News Agency, ousted Chinese politician Bo Xilai stands before the Shandong Provincial Higher People's Court. The court upheld Bo's conviction and life sentence for corruption and abuse of power. Xie Huanchi/AP hide caption

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Nigerian President Goodluck Jonathan declares a state of emergency during a live broadcast on state television on Tuesday. Utomi Ekpei/AFP/Getty hide caption

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NPR's Ofeibea Quist-Arcton on Nigeria's state of emergency
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A Nigerian health commissioner Dr. Sani Malam vaccinates a child for polio during a national immunization drive in Bauchi, Nigeria, last week. Deji Yake/EPA /Landov hide caption

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