Proving nothing. If they planned to establish a base in Germany, that would justify an attack on Germany? You gotta prove that Iraq was in on it, not that al Qaeda liked Iraq.
And anyway - - I wouldn't believe a word the guy says. They torture him, he says whatever he thinks they want to hear.
Totally useless piece of garbage information, typical of CNN - - they don't even bother to caution viewers that the guy was probably tortured to say what he said.