Aaron Miller : Debating what went wrong in Iraq not useful ; protecting U.S. interests now is . Iraq is complex , he says , with sectarian groups at odds , neighbors with own interests . He says U.S. must work with Iraq 's neighbors , even al-Assad , to halt ISIS . Comment: Miller : has been unable and unwilling to do that . U.S. must help right Iraqi military , but without combat forces . Point is to check terror .
Aaron Miller : Debating what went wrong in Iraq not useful ; protecting U.S. interests now is . Iraq is complex , he says , with sectarian groups at odds , neighbors with own interests . He says U.S. must work with Iraq 's neighbors , even al-Assad , to halt ISIS . Comment: Miller : U.S. must help right Iraqi military , but without combat forces . Point is to check terror .