International Atomic Energy Agency (IAEA) inspections since 2003 have revealed almost two decades' worth of undeclared nuclear activities in Iran, including uranium enrichment and plutonium separation efforts. The Security Council called upon Iran to take steps requested of it by the IAEA Board in February -- reinstate its suspension of enrichment and reprocessing, reconsider construction of its heavy water reactor, ratify and implement the Additional Protocol, and implement transparency measures. Iran has continued enrichment activities and failed to meet the Security Council's request.

International Atomic Energy Agency (IAEA) inspections since 2003 have revealed almost two decades' worth of undeclared nuclear activities in Iran, including uranium enrichment and plutonium separation efforts. The Security Council called upon Iran to take steps requested of it by the IAEA Board in February -- reinstate its suspension of enrichment and reprocessing, reconsider construction of its heavy water reactor, ratify and implement the Additional Protocol, and implement transparency measures. Iran has continued enrichment activities and failed to meet the Security Council's request.

The Bush Administration has pursued several avenues to attempt to contain or end the potential threat posed by Iran, at times pursuing limited engagement directly or through allies, and at other times leaning toward pursuing efforts to change Iran’s regime. Over the past two years, the Administration has focused primarily on blunting Iran’s nuclear program by backing diplomatic efforts by European nations and Russia to negotiate permanent curbs on it. International concerns on nuclear issues and other strategic issues have been heightened by the accession of Mahmoud Ahmadinejad, a hardliner, as president. He advocates a return to many of the original principles of the Islamic revolution as set down by the late Ayatollah Ruhollah Khomeini. Some advocate military action against Iran’s nuclear infrastructure, but others believe that continued diplomacy, combined with offers of economic rewards or threats of international sanctions is the only viable option. Still, others believe that only an outright replacement of Iran’s regime would diminish the threat posed by Iran to U.S. interests.