You're obviously pretty damn certain that if Tehran becomes nuclear armed, that they'll immediately press the button without haste.
Taking everything into consideration, as well as dispensing with wishful thinking, it would be reckless not to assume they would use it sooner or later. And not just a direct attack on Israel or whoever but also use it as leverage to further influence/destabilize the region.
But, hey, maybe the Iranians really are just sick of using all that oil under the ground and really do want to convert to nuclear energy.
