They have pretty much been doing what they want since 1983, well rely since the hostage crisis. 9/11, false intelligence on Iraq WMD to use US soldiers as human shields to prevent a strike, start a war in Mexico. Without any repercussions. All with out the bomb. But it is not Israeli policy otherwise Saddam would have had the bomb and Assad would have had the bomb, if neither were a threat then why act. It is very complex and far more dangerous than in 2005 when Qum was discovered, so this is not like Opera or Orchard. But you know 1000 missile silos in the Persian desert is a problem, I mean as they have threatened to close the Straits of Hormuz, why not. Now this is not an Israel problem but a global problem. It all depends on your take on the regime. As long as the US is dependent on middle east oil, and Iran seek the destruction of the US.
from the article: Mossad chief: Nuclear Iran not necessarily existential threat to Israel