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ETA sometimes take up to a year before claiming responsibility, but with an election today (Sunday) it's unlikely they wouldn't take advantage of sending their message clearly. ETA have always worked in a different style altogether, and always call in a warning to evacuate civilians before their bombings. It's unlikely ETA would have gone to such great lengths to do this, and then frame Al Qaeda at the same time.

I think you're missing my point, Zuhkov. It's not the crack down on ETA that's inspired a new extremist wing of the organization, as much as it's inspiration from the success of the Palestinian movement.