That is what we all hope. But even that best case scenario has significant dangers. That line is not clearly defined. As the Iranians keep escalating and keep testing for the boundary line, they will eventually cross it and wont realize it was crossed until it is too late. I believe that was Saddam's problem when he invaded Kuwait.
Also upon reflection, while I don't think the Iranian government as a whole wants a war with the US, their president just might.