If Israel hit Iran before they got nukes the result would be an exchange of conventional missiles and as Iran has no land borders with Israel and doesn't have planes with the range to hit Israel and even if they did they would not be able to carry out a sustained ariel assult it would be a one way suicide mission. It would probably also involve an attack by HIzbollah from Lebanon and provided the politicians stay out of it and let the generals fight the war their way it will not be a repeat of 2006. It would not though result in nuclear war as long as Israel is the only one with the nukes. If Australia believes Iran is not a rouge state ther than it is one of just a handfull of states and certainly the only western one.
Top Kurdish lawyer killed in clashes in southeast Turkey (Reuters)