Israel, nuclear capabilities have NOT stopped any of the discord in the region....and actually made it worse by beginning an arms race for nukes....Israel was well capable to defend herself with conventional weapons....and the "cost" of building a nuclear arsenal was subsidized by US taxpayers at the tune of 3-6 billions per year.
Israel hasn’t had any intention to stop any discord in the region. Its very goal was and is to preserve its existence. And yes, you are right about its capabilities to defend itself with conventional weapons and it has done so. It hasn’t used nuclear weapons, has it? But does it mean that it needn’t have developed its nuclear arsenal?
Actually, it was the Israeli’s Muslim neighbours who provoked the race for nukes in the Middle East by attacking Israel from the very beginning and threatening to eventually destroy it.
Second, if Iran decides to pursue her nuclear capabilities, there is nothing that the rest of the world can do...NOTHING.
Sure, Israel can bomb away, but that will only delay the inevitable by months with the ADDED animosity toward her from virtually all other Muslim countries and castigation from most of her current allies.
Okay, it is nothing that can be done. So, Iran eventually creates a nuclear bomb. What, for example, Saudis reaction will be in this case?
And unfortunately you didn’t answer what you would do if you were America’s ruler.