Look at it this way, their point of view they want America to die. Their main objective will be to cripple us, and then slowly pick us off. After we're downgraded in defenses and tactical oppertunities (Since obviouslly nobody wants to use a nuke) Iraq will then go on a rampage to sack the world.
They have already sworn that if the US invades, they will sink the oil ships that supply america with it's oil addiction! And them having that new under-water missile. I believe it! So, face it. We either invade and lose our oil products courtesy of the iranian 200 MPH under-water-missile. Or we turn Iran into a giant glow-in-the-dark glass bowl and drill down to the oil easier!
Wait, doesent the idea we had in here earlier mentioning snipers sound good? Would fix part of the problem!