No point in starting a war with a powerful Middle Eastern nation. The United States would evidently get drawn into the war as well, since Israel does not have the manpower to battle Iran. They do have nuclear capabilities, but Israel using the bomb would break a multitude of international laws.
Eh, no thanks.
The likelihood of Iran attacking Israel (even if they have nukes) is abysmally low. Israeli aggression would only further soil it's relationship with the rest of the Middle East.
If they do I hope Iran gives them the hell they are due
If they do it could spread into a war into all the middle east. Plus it could easily turn into ww3 at this point.
Probably wouldn't end well for them. Isreal doesn't have the nuclear range to hit many parts of Iran including the capital Tehran. Iran has a large and we'll armed Military. Blood bath regardless.