Al Quada on the other hand have shown in the past that they do not stop at small numbers. They will kill for the impact. Exactly what happened today.
Then I thought back at Bush's fight against terrorism. Apart from the 51st state (UK, copyright Matt Johnson), Spain was the first to support the US after 9/11. The first European country to agree with the war in Iraq.
Later tonight I read about Aznar pointing the finger. About him talking strong language, Bush/Blair style. I feel that he tries to become a world player. The cynic in me even says that short before the re-elections, this will give him an opportunity. Looking at some other countries with elections coming up, I am curious to see if this attack today is a one-off.
My first guess: Al Queda, not ETA.