That's just silly, we don't need a reason, we've got plenty from the 1979 invasion of our embassy (sovereign US territory), the kidnapping and holding of our diplomats and military personnel, to the supplying of EFP and SAMS to be used to kill Americans (and Iraqis!).
We don't need an excuse, we need the cojones. And I think our Commander in Chief has them.
The attack must be well coordinated and the timing exact. I would say the best time would be on or about 10/20/2008. In coordination with the Israeli military a joint attack force will utilize both carrier based aircraft and cruise missiles to effectively reduce the air defense and air force of Iran to smoldering rubble. This will take approximately 4 days. During that time already pinpointed weapons stores will be blown up and when the dust settles the Iranian military will be left dazed and confused while Ahmadinajad will be left standing with nothing more then his d*ck in his hand to fight with. The electorate, loving a winner watch carefully as Democrats scream for an immediate retreat and surrender from Afghanistan, Iraq AND Iran. They are finally seen for the pitiful cowards they are, and they flock to the Republican candidate. He wins by a wide margin, bringing in enough Senate and House seats to return control of Congress to the adults and in doing this, properly scares the living crap out of the terrorists around the world who realize there best friends, the Democrats, won’t be there any longer to help them out.