La CIA se inventó el vínculo entre Saddam Hussein y AlQaeda, no hay motivo alguno por el que AlQaeda atentase en España, o cualquier otro país, por la guerra de Irak.
https://en.wikipedia.org/wiki/Timeline_of_Saddam_Hussein_and_al-Qaeda_link_allegations
In February 2007, a Pentagon Inspector General report found that Douglas J. Feith, who was under secretary of Defense for Policy for United States president George W. Bush from 2001 to 2005, "developed, produced, and then disseminated alternative intelligence assessments on the Iraq and al Qaida relationship, which included some conclusions that were inconsistent with the consensus of the Intelligence Community, to senior decision-makers
No hay ningún motivo para creer ni a la CIA ni a AlQaeda.