Israel could fry them, but absolutely loathes the idea.
Not really ‘now’...the World has one again turned from Israel and she has well prepared for this....as much as she can go solo she will...and that will mean war eventually, not just taking out Irans sites...of which by the way are more than a little advanced and plentiful. Unlike Saddam there's more than one and several hidden.
Quite possible if Israel makes a move Russia will intervene...at which THEN Us and Europe will be sending Russia back home with their tail between their legs until they regroup for the final push.
What Israel loathes is they know Iran's Nuclear is beyond just bombing a few sites....it's not that simple....and to go it alone would be difficult at best ....there's no guarantee they get them all and BiBi knows this all to well and has stated as much.