This week's nuclear talks ended without resolving the issue of uranium enrichment, leaving Iran to potentially face tougher sanctions, says CFR's Ray Takeyh.

Ray Takeyh says that as part of any realistic diplomatic agreement with Iran, the United States and its allies must impose serious curbs on Iran's nuclear ambitions.

A panel discussion marking the release of CFR's new ebook, Iran: The Nuclear Challenge. The essays in this volume, all authored by fellows in CFR's David Rockefeller Studies Program and edited by Robert Blackwill, inform readers on how, not what, to think about Iran's nuclear activities.

A panel discussion marking the release of CFR's new ebook, Iran: The Nuclear Challenge. The essays in this volume, all authored by fellows in CFR's David Rockefeller Studies Program and edited by Robert Blackwill, inform readers on how, not what, to think about Iran's nuclear activities.

The talks between Iranian and IAEA officials will focus on potential inspections at the Parchin military base, and the outcome will influence upcoming P5+1 nuclear talks with Iran in Moscow, says CFR's Michael Levi.

In what may be the clearest picture of Iran's nuclear program to date, Iran: The Nuclear Challenge maps the objectives, tools, and strategies for dealing with one of the most vexing issues facing the United States and global community today.

Seven CFR scholars come together to map the objectives, tools, and strategies for dealing with one of the most vexing problems facing the United States and the world today.

Nuclear talks with Iran are unlikely to lead to a deal in the short term, but they have had some impact: easing tensions and calming oil markets, says CFR's Richard Falkenrath.

Talks in Baghdad reflect Iran's new willingness to discuss its nuclear program, but sanctions may not sting enough to make it change course, says expert Hassan Hakimian.

Jamie Fly and Matthew Kroenig argue that drawing red lines linked to the guaranteed use of force by Washington and its allies could be the best way to avoid conflict with Iran.

A Pew Research Center report reveals growing opposition to the possibility of a nuclear armed Iran, but finds that nations still support imposing tougher economic sanctions versus military intervention.

In his testimony before the U.S. House of Representatives, Ray Takeyh discusses the conflicting priorities of Iran's Supreme Leader. Khamenei needs America as an enemy and a robust nuclear infrastructure to legitimize his rule. Yet, these enmities only further erode his economy and potentially threaten his hold on power.

This Congressional Research Service report looks at foreign policy and internal politics in Iran, drawing conclusions as to what they entail for future U.S.-Iranian and regional policy.

Sanctions have been a major part of the U.S. policy toward Iran since the 1979 Islamic Revolution. This Congressional Research Service report looks at the history and effects of some of the overlapping U.S. and international sanctioning efforts toward Iran's nuclear program.

Ray Takeyh says Iran's supreme leader must resolve the dilemma of having advanced Iran's nuclear program at the cost of eroding its economy.

Elliott Abrams says that a clearer statement from President Obama about his determination to prevent Iranian acquisition of a nuclear weapon is still needed.

When it comes to Iran's nuclear program, then, the United States and its allies should get out of the way and let Iran's worst enemies -- its own leaders -- gum up the process on their own.

Decades of economic and diplomatic sanctions have failed to substantively alter the actions of the Iranian regime, especially regarding its nuclear program. But experts say they remain an important tool to isolate and pressure Iran.

Resolving the U.S.-Iran nuclear standoff is a matter of historical precedent, trust, and diplomacy, argues Iran's foreign minister in the Washington Post.

The White House released this fact sheet on April 23, 2012, accompanying the signing of President Obama's executive order concerning sanctions against those involved in human rights abuses in Syria and Iran.