[G8 Diplomat]

I’ve heard people say Iranians were the target as well, which is probably correct since most people injured were Iranians and Shi’ites.

[AdmSmith]

Sure. but they are trying to solve this equation:
Choose target so you get max P(target is a Shiit)

If Target is Iraqi then P = 0.60-0.65
if Target is Iranian then P = 0.89
and if Target is Iranian outside a Shiite Mosque then P = 1.00