Such an attack would set events in motion far beyond anyone's control. Netanyahu is risk averse and always has been. He would not be prepared to take the consequences of such a "high risk/low return" gamble. Netanyahu is a big attention seeking blowhard and always has been. This explains the current situation quite well.
Bennett, Deri expected to resign from Knesset, remain in cabinet under new 'Norwegian Law’ (Haaretz)
from the article: Iran to hold major air defense drill to simulate emergency situations