HOW MIGHT ISRAEL ATTACK IRAN?
Overt or covert? Israel has been developing "cyber-war" capabilities that could disrupt Iranian industrial and military control systems. Few doubt that covert action, by Mossad agents on the ground, also features in tactics against Iran. An advantage of sabotage over an air strike may be deniability.
From September 2009, a few months after Stuxnet was deployed. I'd love to know the specific attribution for the text in bold.
Reuters mention of Israeli cyberwar capability