Here's my favorite synopsis of the situation by John Derbyshire of the National Review:
We are dealing here with people who are, not to put too fine a point on it, nuts. The Arabs, the Iranians, the Pakis, the Libyans: they are nuts, the great majority of them. Nuts. Not playing with a full deck. Not too tightly wrapped. One brick short of a load, one coupon short of a toaster. The smoke not going all the way up the chimney. Not quite 16 annas to the rupee. Nuts.