"According to the Administration's 'National Security Strategy' document released on March 16, 2006, the United States 'may face no greater challenge from a single country than Iran.' That perception intensified following the military confrontation between Iranian-armed and assisted Lebanese Hezbollah and Israel in July-August 2006. To date, the Bush Administration has pursued several avenues to attempt to contain the potential threat posed by Iran. However, the Administration's focus on preventing an Iranian nuclear weapons breakthrough has brought diplomatic strategy to the forefront of U.S. policy. As part of that effort, the Bush Administration announced May 31 it would negotiate with Iran in concert with U.S. allies if Iran suspends uranium enrichment; in past years the Bush Administration had only limited dialogue with Iran on specific regional issues. However, Iran did not comply with an August 31, 2006, deadline to cease uranium enrichment, contained in U.N. Security Council Resolution 1696 (July 31, 2006), dividing the United States and partner countries over whether to continue diplomacy with Iran and whether and how to move to impose international sanctions on it."
CRS Report for Congress, RL32048
Defense Technical Information Center (DTIC): http://www.dtic.mil/dtic/