Note how the Angry Arab was fooled into helping the Zionist spies.
The Jews have had lots of time to build the legends of their operatives. Both the three spies caught in Iran and the Jewish-American spy, Ilan Grapel, caught in Egypt had built impeccable 'liberal' reputations. You take the right courses, attend the right rallies, say the right things to your friends, make the right postings on your blog. All your life is directed to providing a convincing story to fool Americans. When a Zionist operative is caught, the handlers can say 'that's impossible', he/she was pro-Arab, pro-Palestinian, anti-Zionist, etc, etc. Why would we be surprised over and over again that the Jews would be smart enough to provide this cover for their assets? Even in their post-release press conference, the spies caught by Iran kept in character by mildly criticizing American policy towards Iran, all the while making the Iranian government seem like monsters.