They couldn't even if they wanted to.
It would be quite a flight path for Israel though.
Its possible, but would require the US and possibly NATO forces to be includes due to the immense distances between all the possible nuclear facilities and the required amount of bunker busters and heavy munitions required to get the job done.
This isn't as simple as the strike against Osirak.
I hope you are right. As someone who has friends in both Iraq and Afghanistan I really do, but in both of those cases, Syria and Iraq did not really do much attacking back. Iraq did, but not to the scale that Iran has claimed that they would.
Some of Iran's and Hezbollah's missiles missiles could do a lot of damage to Israeli cities like Tel Aviv, and the US bases in Iraq, Afghanistan, and Bahrain.
Both Syria and Iraq were involved in proxy warfare long before Iran came into the picture, training, financing, and arming terrorist groups from within their countries. Syria even before Iraq with their involvement with Palestinian fedaheen against not only Israel, but in Lebanon and Jordan.
Iran's missiles are derivatives of Scuds, the same which the Iraq's had in their arsenal at the time the Osirak reactor strike in '81, in addition to a number of short and medium range unguided missiles. The main difference is that Iraq had the capability to fit chemical and biological agents to these missiles, which Syria, as far as we know, has had some issues doing the same (
Report: Dozens dead in Syrian chemical weapons experiment), albeit who knows how far they've come since then. Since the Osirak strike, Iran has made strides in their capabilities in local missile production and advancements over the technology given to them by N. Korea, including clandestine research and tests on miniturizing nuclear warheads and mounting them on these missiles. There's additional evidence that there has been additional medium to long range missiles transferred to Hezbollah from Syria as well, even more so due to the turmoil seen against the Assad regime.
FYI, these missiles can reach Eilat, Israel's southern-most tip, not just Tel Aviv. An attack on Iran's nuclear sites, dozens which are potential targets distributed throughout Iran, would have a multi-prong reaction from Hezbollah and Syria in addition to incursions along the Israel-Egypt-Gaza border and the West bank.
Coming from someone who resides in Tel Aviv, I hope this attack will never occur since the repercussions would be immense. Sure, not doing anything would be significantly worse, but Israel should continue its attacks along the cyber-route and low-level attacks against scientists and the facilities themselves from within Iran as it has been doing for quite some time now.
IMO, Iran won't use its massive ballistic arsenal since that is its only real deterrent...
.
