This report discusses the increasing international pressure on Iran to curb its nuclear program and how that pressure discourages foreign firms from investing in Iran's energy sector, hindering Iran's efforts to expand oil production. This report discusses the history and progress of the formal U.S. effort to curb energy investment in Iran, which began with the Iran Sanctions Act (ISA) in 1996. This report also discusses U.S. concerns that other nations, e.g., U.S. allies, Russia, and China, are not as strict with their economic sanctions against Iran, and how U.S. policymakers are combating this reticence with various pieces of legislation.

This report discusses the relationship between Iraq and Iran in the post-Saddam Hussein era, with particular focus on what Iran's intentions and/or long-term goals may be for increasing its influence in Iraq. The report explores the various strategies that Iran has used to spread its influence throughout Iraq's military and political spheres. The report also addresses the United States' concern over the Iran-Iraq relationship, especially as it concerns armed Shiite factions and U.S. efforts to stabilize Iraq.

This report seeks to provide an overview of the reported or suspected variety of Iranian ballistic missile programs. Because there remains widespread public divergence over particulars, however, this report does not provide specificity to what Iran may or may not have, or is in the process of developing.

This report provides a brief overview of Iran's nuclear program and describes the legal basis for the actions taken by the IAEA board and the Security Council. It will be updated as events warrant.

This report discusses the reasons that Iran is considered a threat to U.S. security, including Iran's nuclear program, involvement with terrorist organizations, and involvement with neighboring countries' local governments. The report also discusses ways which the U.S. hopes to modify Iran's behavior with sanctions, and the effectiveness of these sanctions.

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." To date, the Bush Administration has pursued several avenues to attempt to contain the potential threat posed by Iran, including supporting a long-term policy of changing Iran's regime. Iran's nuclear program is not the only major U.S. concern on Iran. Successive administrations have pointed to the threat posed by Iran's policy in the Near East region, particularly material support to groups that use violence to prevent or complicate Israeli-Arab peace. Iran's human rights practices and strict limits on free expression have been consistently criticized by official U.S. and U.N. reports.

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Report discussing U.S. concerns with Iran, including concerns relating to endorsements given to terrorist organizations by the Iranian government, nuclear weaponry, and human rights practices.