An attack on German soil would totally work too. They'd do whatever the terrorists told them to do after that, and be so damned proud of their sensibility for doing so. I know Germans. They would also blame it on the United States.Update: John Rosenthal says that "Harrach’s message to Germany was highly ambiguous", pointing out that
Bekkay Harrach, a German Islamist of Moroccan descent who goes by the nom de guerre Abu Talha Al-Almani or “Abu Talha the German” … begins his speech by stating precisely his gratitude toward Germany … Harrach then goes on to stress more general grounds for al-Qaeda as such to be grateful — or at least not particularly hostile – toward Germany. … Harrach repeatedly returns to the theme of the general forbearance of al-Qaeda toward Germany.
If, however, Harrach shows forbearance and even gratitude toward Germany, the same cannot be said of his attitude toward German Chancellor Angela Merkel. … The upshot of Harrach’s video warning appears to be that Germans should vote out Chancellor Merkel and her Christian Democrats next Sunday if they want to avoid an attack on German soil.