Does anything need to be done?
If they shoot a nuke at Isreal yes a a city might be destroyed. But after that ALL of Iran would be nuked to kingdom come, and I do mean ALL without remorse and without mercy.
The only people who can and should stop it are Iranians themselves - if they are unable to see the resulting domino effect then...
This is as it always is, a ploy to make Iran seem more powerful to its Islamic allies than it actually is.