In his introduction to the September 2002 National Security Strategy of the United States, President George W. Bush wrote, "The gravest danger our Nation faces lies at the crossroads of radicalism and technology. Our enemies have openly declared that they are seeking weapons of mass destruction (WMD), and evidence indicates that they are doing so with determination. . . . Terrorists are organized to penetrate open societies and to turn the power of modern technologies against us." Iran is the poster-child for the nexus of terrorism and WMD. It is the world's foremost state-sponsor of terrorism, as well as one of the countries most actively pursuing nuclear weapons. Washington is vigilant about Iran's support for a network of Islamist terrorist organizations and persistent in pressing Iran to end its fi nancial, political, material, and operational support to them. At the same time, the United States has to come up with effective strategies to ensure that Iran does not acquire nuclear weapons.