Iran is not Iraq. Multiple hardened targets, advanced air defense networks, no strategic bombers, a limited mid air refueling capability. The leaders in Israel know they cannot disable Irans nuclear ability without the help of the United States, and the US knows this as well, as do the Iranians. Without the United States, a successful conventional attack on Iran is impossible.
Gunmen in Egypt kill guard outside Niger embassy (Reuters)
from the article: Israel can't launch strike against Iran on its own