Compared to that, this is sophmoric. It is possible that there were some agents posing as art students. However, it is not odd that most Israeli art students served in the IDF or that some served in military intell. This is a common positng for connected draftees who don't want to risk their lives in the Territories. Amazingly enough, these leftists are more likely to be artists.
I buy a cup of coffee from one of these every day. He is no spy.
Shortly after Israel was shaken to the core over the Lavon Affair. Israeli intelligence agencies gets more credit than they are due. The "If he really did it, he would have done it differently" argument is used by criminal defense attorneys all the time. It doesn't work.