With the beheading of US journalist James Foley, the jihadists of ISIS have certainly succeeded in getting our attention. World leaders have taken time out from their summer holidays to call for concerted action. Will the video of the execution serve as an effective recruitment tool for more home-grown jihadists? What's the way to stop them? And what's the impact of accrued Western involvement both in Iraq and in neighbouring Syria, where ISIS's gains come at the expense of more moderate rebels?
Chief Executive, The Ramadhan Foundation
Former US Ambassador to Iraq and Turkey
Former spokesperson for the Syrian National Council