"Here, for instance, is a plausible scenario for a military collision with Iran: Iraq fails to meet the benchmarks for progress toward stability set by the Bush administration. This is followed by U.S. accusations of Iranian responsibility for the failure, then by some provocation in Iraq or a terrorist act in the United States blamed on Iran, culminating in a "defensive" U.S. military action against Iran. This plunges a lonely United States into a spreading and deepening quagmire lasting 20 years or more and eventually ranging across Iraq, Iran, Afghanistan and Pakistan." (thanks Assaad)