I honestly don t think conspiracy theories are encyclopedical you will not find them in Britannica Hispanica Encarta and unless clearly identified as such they violate WP UNDUE To say that the PSOE backed up the Madrid bombings which is different from backing the turmoil but even that even if sourced with a POV reference is not compliant with the other policies in Wikipedia Good faith has three unavoidable limitations CITE OR and NPOV Remember that what rings true or is a state of mind based on reports that turned out to be wrong in the end and can not be fully verified can not be included in Wikipedia If at all all sorts of conspiracy theories could be included and even there I have my reservations in a very specific article say 14 M Bombing attacks at Madrid but not in the general Spain article It would be similar to including a sentence in the History section of United States saying that the Bush administration was behind the 9 11 attacks according to some sources Or as you know there are hundreds of conspiracy theories of Spain against Catalonia of which I could find dozens of sources some of which to many people ring very true but they are not included in Wikipedia and probably should not as you would probably agree But I would be more than happy to ask an administrator s and other users with good standing for their opinion and or mediation if you like