International Security, Summer 08:

Closing Time: Assessing the Iranian Threat to the Strait of Hormuz
....could Iran close the Strait of Hormuz? What might provoke Iran to take an action so contrary to its own economic interests? Does Iran possess the military assets needed to engage in a campaign in the strait, and what might such a campaign look like? Perhaps more important, what would the U.S. military have to do to defend the strait in the event of Iranian interference there? What would be the likely cost, length, and outcome of such efforts?