MAIDUGURI, Nigeria — United Nations Secretary-General Antonio Guterres on Tuesday lauded Nigerian authorities’ ongoing reintegration of defectors from the jihadi Boko Haram group, which has waged a decade-long insurgency, as “the best thing we can do for peace.” Speaking to reporters in Maiduguri, the capital of Borno state where the insurgency is centered, Guterres also called for more global funding …