What makes your son in law think that this wouldn't happen even if we didn't go to war? Ask him: Were we at war with anyone on February 26, 1993 (bombing of WTC)? Were we at war with anyone on June 25, 1996 (Khobar Towers bombing)? Were we at war with anyone on August 7, 1998 (Kenya &Tanzania Embassy bombings)? Were we at war with anyone on October 12, 2000 (U.S.S. Cole bombing)? Were we at war with anyone on 9/11?