Don't need to be, the whole of europe needs a full stop of immigration from islamic country's, as long as we allow mass immigration we are importing the problem. Not worried about terrorism personally I am worried of a demographic timebomb. Maybe the change in the islamic world can come from people who have lived in the west, make it atractive to go back, a 20.000 or 30.000 reward or so, can't cost us more money then it does now