I think Martins comment about Muslims is typical of him, a sweeping generalisation that can, in no way be proved.
As personal experience is often given more credence than papers, tv etc on this forum, I would like to add mine. I have been working in Algeria, a country with a terrorist problem of its own, for just over five years, and I have enjoyed it. During that time none of the thousands of Algerians around me or my collegues have opened up a can of Jihad on our ass. Our work crew includes Americans (both North and South), Brits, Canadians, Italians, Hungarians, Dutch, Germans, French, Syrians, Norwegians, Russians and we all get on.
Besides, those terrorists that want to kill Americans or any other nationality no longer have to go to the US or Europe, they have a nice big play ground in Iraq to do that courtesy of Bush, Blair and the like.