Are Dentists vulnerable for terror recruitment?

I read this at the Jerusalem Post:

Two Israeli Arab dentists from the Galilee were arrested on suspicion of helping Hamas plan bombings in Israel, security sources revealed Sunday. The two were identified as Nazmi Hassin, 35, and A'salam Zeidan. They were arrested in September, but news of the arrest was under a gag order until last night. According to security sources, the pair had studied dentistry in Romania in the 1990s. After being recruited into Hamas they even underwent espionage training in Turkey, linked up with a handler and carried out missions for Hamas once they returned home.

Hassin, 35, from Nazareth, told interrogators that he was trained in surveillance, intelligence collecting, encryption and clandestine activity. The training was held during a five-day period in Istanbul. Plans to send him to Iran for military training fell through because he only had an Israeli passport. Once back in his Galilee village, Hassin helped recruit Zeidan, his partner at their dentistry office in Kfar Manda. He also passed on the names of at least three other Israeli Arabs to his Hamas contact for potential recruitment.

Zeidan, 36, told his interrogators he agreed to find safe houses for Hamas members transporting "the goods." In 1999, Zeidan traveled to Turkey for training with Hamas, that included learning how to obtain fertilizer used for making explosives, bomb assembly and transmitting orders via e-mail accounts. He also served as a courier for Hamas and delivered money to a Hamas member in Nazareth. In 2002, Zeidan met with a Hamas agent in Saudi Arabia and agreed to scout out potential crowded bombing sites in Tel Aviv. Hassin aided Zeidan in maintaining contact with their Hamas handler.

Somehow it seems perfectly feasible and logical to me that a terrorist organization would actively seek to recruit dentists to their cause. In my mind, it’s the most natural fit but maybe my judgment in this is clouded in this respect as I have been referring to my dentist as the Butcher of Prague for sometime now.

But what is noteworthy is the suggestion from Israeli authorities that only an Israeli passport saved Hassin from traveling to Iran to undergo further “military” training for Hamas.