Crucified by the Caliphate monsters: Iraq descends into apocalypse as Islamic State fanatics seize towns and tell terrified Yazidi 'Become Muslims by noon today... or we kill all of you'
- Mail on Sunday reporter Ian Birrell gives shocking despatch from Irbil
- Terrified residents see Islamic State (IS) jihadists capturing nearby towns
- Refugees speak of being offered sinister ultimatum by advancing horde
- IS has shocked the world again by capturing new swathes of Iraq
- Came as U.S. stepped in and started bombing IS artillery and convoys
- Meanwhile they surround Yazidi religious minority on barren mountainside
- Some of persecuted sect escaped today by helicopter and escort