Every nation has plans for war. The US has been developing plans for Iran since the Islamic Revolution in the '70s. The thing is we will only wage a aero-naval war with Iran. A ground war is out of the equation because of the Iraq debacle. We could try to invade Iran but it will be a bloody mess. The landmass is huge,mountains. Basically the Iranian army will put up a tough fight. The draft would need to brought back. Occupying Iran would be a mistake. An occupation of Iran would worse then Vietnam,Afghanistan,and Iraq put together. Iran has a paramilitary force of 11,390,000! Fighting a 11 million men and women insurgency would end in defeat. So they only war we will wage with Iran will be aero-naval operations.