05:32Boston Calling17/10/2015 04:32 GMT: Corporate DiplomacyBBC World Service Duration: 27 minutes Sat 17th Oct 2015, 05:32 on BBC World ServiceAvailable for over a yearListen nowAfter battling the so-called Islamic State, Kurds find a new foe in Facebook. Show more GenresFactualFormatsDiscussion & TalkBrandBoston Calling Source: BBC Online