"Getting Turkey to close its 610-mile frontier with Syria will take intense political pressure on a powerful and uncooperative Turkish state, but it is only by these means that potential terrorists can be impeded. Becoming dangerously "radicalised" in effect means adopting a violent sectarian anti-Shia ideology akin to Saudi Wahhabism. Stopping this happening means confronting Saudi Arabia, Kuwait and UAE over their support and funding for Sunni fundamentalism."