In an hour-long video, Boko Haram's leader boasted his men will sell more than 200 girls kidnapped by the radical Islamist sect three weeks ago in Nigeria's Borno state. We look at the timing of the announcement, on the eve of a major World Economic Forum event that's been billed as a celebration of Nigeria officially dethroning South Africa as the continent's largest economy. How should Goodluck Jonathan handle Boko Haram, and what does it all say about Nigeria's prospects going forward?

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