So would you also agree that by wishing to attack Iran pre-emptively, simply because you fear a possible belligerent act, you also present the presence of a risk to Iran? Are they justified in bombing Israel by your reasoning? Israel has nukes, they have a history of waging war on their neighbours, they make worrying statements with respect to Iran... so Iran should bomb the crap out of you?
If the reality of the middle east was something you were more accustomed to, this might have more weight.
In 1990 Iraq bombed Israeli cities with long range missiles. I clearly remember an American patriot missile intercepting an Iraqi scud over my school, and me as a cheerful elementary school youngster collecting missile parts from the school yard. what would these missile attacks look like if Israel had not taken out the Iraqi nuclear reactor 9 years earlier?
Like Saddam's regime, the Iranian regimes does not shy from committing atrocities against different groups inside their own nation, they also do not shy away from making blunt rhetoric against Israel. wouldn't the logical formula be to take these rhetoric and their domestic policies seriously?
what you call 'possible' may turn out to be a question of 'when' rather than 'if' in the long term.
Iran is already using terrorist elements to attack Israel, in 2006 and 2009 Hezballah and Hamas operating as Iranian proxies on many levels, launched thousands of rockets on Israeli cities. its not a completely far fetched hypothetical scenario as far as Israel is concerned, as its based on middle eastern realities. something which people from other parts of the world have a serious difficulties grasping, as they are simply not exposed to it on daily basis.