World powers are now offering to ease sanctions on Iran if it agrees to halt its most sensitive nuclear activity. Expert Daryl Kimball urges a full diplomatic press to stop Iran from crossing the nuclear weapons line.

In the nuclear dispute between Iran and the United States, a grand bargain is unlikely given the level of mistrust between the two parties. What's more realistic is a modest compromise that breaches the wall of mistrust and potentially sets the stage for further-reaching arms control measures, says Ray Takeyh.

Foreign policy has not played a major role in the presidential campaign so far, but a close race could make it a factor in courting "the moveable middle," says CFR's James Lindsay.

This week's latest round of Iran talks seems to have done little to reconcile the two sides on the country's nuclear position, says CFR's Michael A. Levi.

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.

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.

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.

The Economic Community of West Africa (ECOWAS) Moratorium on the Importation, Exportation and Manufacture of Light Weapons was adopted on October 31, 1998.

Micah Zenko discusses whether Israel should accept a nuclear ban.

Kim Jong-il's death has prompted discussion about the future of the isolated country and its nuclear weapons program. Experts cited in this CFR Backgrounder believe a post-Kim regime in North Korea would remain a tough nuclear negotiator.

Frank G. Klotz, Susan J. Koch, and Franklin C. Miller argue that as the United States and Russia continue to reduce long-range, strategic nuclear weapons to increasingly lower levels, a disparity in tactical nuclear weapons has serious implications for the overall nuclear balance between the two countries and the continued efficacy of the U.S. nuclear umbrella for its allies.

Matthew Kroenig argues that the world will not be safer if the United States had no nuclear weapons.

Stephen Sestanovich testifies before the U.S. House Foreign Affairs Committee that, though the U.S. and Russia restored broadly cooperative ties after 2008, the relationship is marked by lingering frustration and even friction.

How would the Israeli defense establishment respond if Iran went nuclear?

Jonathan Pearl says that with the New START treaty entering into force, next steps must begin now for the U.S. to achieve further bilateral nuclear reductions with Russia.

This Working Paper reviews different possible Iranian nuclear capabilities, examining the conditions under which Iran should be considered a genuinely nuclear-capable power. It also assesses the regional and global consequences of a nuclear-capable and nuclear-armed Iran.

Following U.S. ratification of the New START arms control treaty with Russia, join Rose E. Gottemoeller, Steven Pifer, and Micah Zenko for a discussion of the next steps in U.S. and Russian nuclear cooperation.

Following U.S. ratification of the New START arms control treaty with Russia, Rose E. Gottemoeller, Steven Pifer, and Micah Zenko discuss the next steps in U.S. and Russian nuclear cooperation, in particular with regard to missile defense cooperation and the new "123 Agreement."

Following U.S. ratification of the New START arms control treaty with Russia, Rose E. Gottemoeller, Steven Pifer, and Micah Zenko discuss the next steps in U.S. and Russian nuclear cooperation, in particular with regard to missile defense cooperation and the new "123 Agreement."