To be honest, I'm for just not doing anything.
If diplomatic talks fail, just be like, okay, gg.
If we have to go to Iran to use force to deny them nuclear weapons, we would most likely still be in Iraq at this time.
Even if it was just Air Force, I wouldn't be surprised if Bush, if re-elected, would want the army in there for some good ol' ground war. Because lets admit, I bet hes having fun with military reports, feeling all big and tough like his dad from the Desert Storm.
If this happens, then the draft happens.