By Okey Ndibe… In political terms, last week was supposed to be a  fair one for President Muhammadu Buhari. At his inauguration a year and  five months ago, he had pledged to rescue more than 200 schoolgirls  abducted by Boko Haram insurgents since mid-April 2014. Last week,  through a swap deal (and perhaps some cash payment), his administration  secured the release of twenty-one of the young captives. It was a modest  down payment on the president’s promissory note, but one that boosted  the spirits both of Nigerians and sympathizers around the world.