At this point there is nothing that Israel can do because in reality they don't have the real military capacity to engage Iran. They're pretty good at making daily propaganda threat against Iran who's completely ignoring them. Israel never attacked an equal enemy in it's current history, they will only attack its enemy only if they are really incapable to win and weak. At this point they will have to sit down and watch in idle Iran becoming a military power and may Allah bless them.
Palestinian man suffers light wounds from rocks thrown by Jewish men in Jerusalem (Haaretz)
from the article: Russia to supply Iran with S-300 defense systems