Something's not right here.  Terrorist groups like ETA live in a parastic relationship with the press (the question being who the parasite is).  ETA likes to talk.  Why would they not send this to embassies like they have with previous letters like the one to Villepin in October, why is the only proof this even exists an intercept from the Guardia Civil?  

And I'll give my consent to any government that does not deny a man a living wage-Billy Bragg