Some of the most prominent reformers have argued for years that the ideological and theological roots of Islamist extremism must be addressed, a topic administration officials carefully avoided during a three-day summit this week. Reformers also say the White House is hurting its own efforts by working with people who sympathize with the goals of violent extremist groups, if not their methods."We have to own the issue of extremist Islamic theology in order to defeat it and remove it from our world. We have to name it to tame it," Muslim journalists Asra Nomani and Hala Arafa wrote in an...