0ISIS' Latest Beheading a BetrayalISISPeter Kassig, the latest American beheaded by ISIS, had converted to Islam, which should have been enough to keep him from being killed. Christopher Dickey joins MSNBC to discuss why it wasn't.Christopher DickeyWorld News EditorUpdated Apr. 21, 2017 7:28AM EDT / Published Nov. 18, 2014 6:00PM EST Christopher DickeyWorld News Editorchristopher.dickey@thedailybeast.comGot a tip? Send it to The Daily Beast here.