before the gulf wars. if the attack is focused on the military installations, not regime change, iran will unlikely take steps that can damage the ruling system, such as blocking the world's oil flow. oil prices may spike but for a short period. from the military point, iran does not have capabilities to hit superpowers. at most, it can send rockets to israel, inflicting some damage. but again, going too far might lead to the regime change in iran. it is not that clear whether the mullahs are ready to take such a risk for the nukes they didn't care much in the first place.
Swiss customs seize 578 pounds of ivory en route to China (AP)