It seems that the Government is even considering using "tactical" nuclear weapons to take out the Iranian's nuclear facilities. Obviously if the US attacks they will have to do so before Iran develops it's own nuclear weapons and targets Israel (not sure what sort of range their missiles have, but Israel would be the obvious target, followed by US bases in the rest of the Middle-East).
This is quite a worrying escalation of events. Specially with Bush apparently considering "freeing" Iran as his Presidential legacy. According to the article the officials at the Pentagon are so worried about the use of nuclear weapons that they have considered resigning their posts.
An attack on Iran could really be the turning point of modern history. As the article says, I don't think many of the 1.2 billion Muslims around the world will take kindly to Iran being attacked. This could escalate the current insurgent/terrorist threat to a new level...
Dangerous times indeed.