Curbing-coups-deacutetat-in-West-Africa-requires-more-proactive-measures-including-dialogue-and-mediation-a-former-Special-Representative-of-the-UN-Secretary-General-and-Head-of-the-United-Nations-Office-for-West-Africa-and-the-Sahel-UNOWAS-Dr-Mohamed-Ibn-Chambas-has-said