The Oxford Research Group, under the rather unnerving url iranbodycount.org presents an analysis of things that might happen in case Bush is that crazy:
"This briefing paper provides a comprehensive analysis of the likely nature of US or Israeli military action that would be intended to disable Iran’s nuclear capabilities. It outlines both the immediate consequences in terms of loss of human life, facilities and infrastructure, and also the likely Iranian responses, which would be extensive.
An attack on Iranian nuclear infrastructure would signal the start of a protracted military confrontation that would probably grow to involve Iraq, Israel and Lebanon, as well as the USA and Iran. The report concludes that a military response to the current crisis in relations with Iran is a particularly dangerous option and should not be considered further. Alternative approaches must be sought, however difficult these may be."