Latest beheading ‘an act of pure evil’

Islamic State militants have beheaded another American hostage, Peter Kassig, issuing a video claiming the killing yesterday and warning the US they would kill other US citizens "on your streets."

President Barack Obama confirmed the death of the aid worker in what he called “an act of pure evil by a terrorist group that the world rightly associates with inhumanity.”

The announcement of Kassig’s death, the fifth such killing of a Western captive by the group, formed part of a 15-minute video posted online in which Islamic State showed the beheadings of at least 14 men it said were pilots and officers loyal to Syrian president Bashar al-Assad.