I dont remember who said it after 9/11, but whoever it was, what he said still applies.
Tefillah, Krias Shma, Talmud Tora, Tzedaka, Chessed etc.., all a vaday dioraisa. Why events happened, are pure speculation and a safek at best. Ain safek motzi miday vaday. Deal with the vadays and leave the sefaikos.