We can argue about 9/11. It is my opinion that if Clinton paid more attention to US's enemies then his johnson, bin laden would have been either in a prison or 6 feet under well before 9/11 &, therefore, there would have been no 9/11.
Now as for the number of terrorist attacks before 9/11, none. Then again, Khobar towers, USS Cole, trade center bombing 1993, marine barracks in Lebanon. Thanx, for the set up. That was an easy one