As the Iraqi government seeks to rebuild and resettle areas liberated from the self-proclaimed Islamic State (IS), Talib Muhammed would seem to be the prototype of an ideal ally.He is a Sunni Arab leader with credibility in his community; he has effective working relationships with members of other ethnic and sectarian identity groups in the area; and he is a committed enemy of IS, having lost several members of his own family to the organization’s progenitor, al-Qaida.But more than 14 m…