They’d better be careful. Israel has the big boy weapons, not the crap that Pakistan, Iran and North Korea has. And they have submarine-based missiles, as well, for a second strike.
Most delicious. Cruise missile from an Isralei sub in the Persian gulf. Ayatola Hominy will glow green.
The point is that one, and only one, nuke exploding over land or under water will effectively destroy Israel.
Further, none of the mad mullahs ruling Iran cares a wit about surviving an exchange as they believe such a strike will entice the 12th Imam out of the well and lead Islamic forces to Armageddon and the extinction of the human race (or in their religion to Paradise).
Being careful only applies to people who love life, who wish to defend their homeland, not to people who love death and want the deaths of millions.