Baghdad, Shawwal 07, 1436, July 23, 2015, SPA -- US Defence Secretary Ash Carter arrived in Baghdad on a surprise visit Thursday for talks with Iraqi leaders on the progress of an ongoing military campaign backed by Washington against the ISIS extremist militia. Carter's visit, part of a regional tour, is his first to Iraq since he took office in February. --SPA 11:56 LOCAL TIME 08:56 GMT www.spa.gov.sa/w