I agree nonetheless there isn't any mention yet of the FBI travelling to Baghdad to interrogate arrested suspect. Irak PM didn't go into details although the planning of attacks in subways while possible do not match the change of strategy since Mumbay and the early stage of the Islamic state, Kenya Mall, BP compound and gunmen rampage where the effort to reduce the number of Muslim victims were noticeable. For Europe, following the type of attack evolution with Merah's and Nemmouche's  the most likely next attack will not be any blind bombing but rather a Mumbay style attack with several gunmen, multiple targets preferably in upscale shopping areas for as much as possible spare Muslim working crowds.