ISIS militants pictured toppling crosses and smashing relics in Nineveh . Latest evidence of ISIS trying to cleanse caliphate of Christian heritage . Also attacked ancient city of Nimrud and 2000-year-old fortress city Christianity .
ISIS militants pictured toppling crosses and smashing relics in Nineveh . Latest evidence of ISIS trying to cleanse caliphate of Christian heritage . Also attacked ancient city of Nimrud and 2000-year-old fortress city Hatra .