Speed Reads

ISIS Crisis

ISIS claims to behead British aid worker

ISIS on Saturday released a video purporting to show the group beheading a British man, David Haines, who was abducted last year while working for a humanitarian group in Syria. British Prime Minister David Cameron called the execution an "act of pure evil," and vowed to "hunt down these murderers and ensure they face justice." ISIS previously released videos showing the executions of two American journalists.