Afshin Rattansi goes underground on the Islamic State and the prospects of Western intervention in Iraq and Syria. Sami Ramadani, professor at London Metropolitan, warns that the growth of the Islamic State has given the West carte blanche to intervene and the media are using actions such as the beheadings to push public support for war. We speak to Charles Clarke about why politicians can’t tackle big issues, as he warns that without change ‘faith in democratic politics will be weakened’. We examine whether Cameron is helping the Islamic State by threatening and sanctioning the people who could help fight against them. And we round up PMQs, where David Cameron is refusing to work with the Assad regime against the Islamic State (IS, formerly ISIS) – claiming that their brutality helped generate IS.