Iran could cripple the west without firing a single shot, ...and the first casualties... the ones who are going to feel it won't be the soldiers on the battlefield, ...it will be civilians in America. Air power can only do so much, then the soldiers will have to go in. If you think attacking Iran will cause them to stop their nuke program you're mistaken. If anything, it could and most probably would cause them to steer it away from energy, and towards weapons.