Israel will launch an attack on Iran only if it feels that it is the only way to prevent an attack. I could see Israel bombing a vehicle that was to supply enriched Uranium if they felt that bombing this vehicle would delay Iran's Nuclear plans by some significant aount of time.\n\nNote that when Israel launched an attack in Iraq's Nuclear plant (condemned by the world at the time) they made sure to do so when they knew there would be minimal casualties on the ground.
What are the chances that Israel launches an attack to prevent Iranian nuclear ambitions?