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For 15 years, the truck-bomb killing of a former prime minister went unpunished. But an even more devastating recent blast overshadowed a court\\u2019s ruling on the culprits. Chinese students hoping to study in America have been caught in the middle of the countries\\u2019 rising animus\\u2014not for the first time. And the origins of all the hair in Nigeria\\u2019s wildly popular wigs.

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