There are 3 lead characters in this tragedy of a play. And what they have in common is that all 3 try to cling to power because the alternative is prison (at best).
In this specific case of the Iranian nuclear program, I believe the highly-enriched uranium weights more in the balance than any other domestic reason for Netanyahu to act. There’s no way any Israeli government will willingly let Iran have a nuclear weapon.
Sure, but he's been complaining about Iran getting nukes for 30 years now. It's interesting that this happened round about the time there was a split in his coalition about the Orthodox and IDF service.