It was going on before 1993 (re: the US) I can also tell you that it was going on in 1974 in France. Algerians blew up one of the basilicas of Sacre Coeur. I think the French figure appeasement will work. They are SO WRONG!
But, I digress, we still have nothing to pin the shootings on ME terrorists at this point. Its a waiting game for some hard evidence.