My concern with that would be if it caused the various factions to unite behind a threat from outside. I’d say, covertly arm the reformists and let them force a change from within. Bombing the nuke facilities will end the emergent revolution.
I have no clue what Israel’s best move is. I do know (strongly suspect) they have “war gamed” all scenarios.
In my amateur opinion. co-opting and turning the military would be most desirable.