Tsohon shugaban Najeriya kuma daya daga cikin wadanda suka kafa kungiyar raya tattalin arzikin kasashen yammacin nahiyar Afrika, Janar Yakubu Gowon, ya bukaci ECOWAS ta dage takunkumin da ta kakabawa kasashen Mali, Burkina Faso da Jamhuriyar Nijar.