By John Lee.
US Secretary of State John Kerry has said Iran's presence in Iraq is "helpful" to American attempts to defeat the Islamic State group (IS, ISIL, ISIS, Daesh).
He told the Aspen Ideas Festival:
"... we have challenges with Iran as everybody knows and we are working on those challenges ... But I can tell you that Iran in Iraq has been in certain ways helpful, and they clearly are focused on ISIL-Daesh, and so we have a common interest, actually."