Leslie H. Gelb interviews U.S. vice president Joe Biden.

Micah Zenko argues that Iran's recent downing of a Sentinel drone is neither surprising nor particularly revealing.

Ray Takeyh says Iran's rulers view possession of a nuclear bomb as a means to return to the international fold on their own terms.

Ray Takeyh and Suzanne Maloney say that despite decades of struggling under punitive financial measures, Iran has persisted with its objectionable policies, ranging from terrorism to proliferation of weapons of mass destruction.

There is growing support in the U.S. Congress to sanction Iran's central bank in response to new nuclear revelations. Some experts say such a move could backfire and help the regime.

The attack on the UK embassy in Tehran was clearly endorsed by the regime and signals more troubles ahead on the effort to contain its nuclear program, says expert Robin Wright.

This Congressional Research Service report reviews the history and efficacy of U.S. sanctions against Iran, as well as broadening international support and compliance.

Max Boot says the West is still failing to face up to the growing threat from the Islamic Republic.

This bipartisan amendment to the 2012 defense authorization bill, by Senators Robert Menendez and Mark Kirk, places sanctions on the Central Bank of Iran and foreign institutions doing business with the Central Bank of Iran. Humanitarian exceptions are made for medicine, food, and medical equipment. The bill also allows the president to suspend sanctions if he finds it a matter of national security. The bill passed the Senate on December 1, 2011.

Elliott Abrams discusses the recent attacks on the British Embassy in Iran and says the United States and its allies must to use this opportunity get behind President Sarkozy's proposal to sanction Iran's central bank and stop its oil exports.

Secretary of State Clinton and Treasury Secretary Geithner gave these remarks on November 21, 2011, regarding the presidential executive order introducing new sanctions on Iran.

President Obama signed this executive order regarding sanctions against Iran on November 20, 2011.

CFR fellows Matthew Kroenig, Elliot Abrams and Ray Takeyh discuss the findings of the United Nations’ International Atomic Energy Agency report on Iran's nuclear program.

The UN nuclear agency's latest report contains no "gotcha" disclosures about Iran's nuclear capability but creates a clear impression of a weapons program in the works, says expert Mark Hibbs.

CFR's Matthew Kroenig discusses the newly released IAEA report on Iran's nuclear program.

A UN report on Iranian efforts to obtain a nuclear device triggers new debate among analysts and policymakers over the appropriate U.S. and international response.

The IAEA released this update of its report on Iran's nuclear activities on November 8, 2011. Among its findings: "The Agency has serious concerns regarding possible military dimensions to Iran’s nuclear programme. After assessing carefully and critically the extensive information available to it, the Agency finds the information to be, overall, credible. The information indicates that Iran has carried out activities relevant to the development of a nuclear explosive device. The information also indicates that prior to the end of 2003, these activities took place under a structured programme, and that some activities may still be ongoing."

Elliott Abrams and Dwight Bashir lead a conversation on the Iranian regime's persecution of members of the Baha'i faith.

David E. Sanger criticizes U.S. containment strategies used in an effort to reduce Iran's nuclear capability.

The fast-emerging split between Turkey and Iran has revived a centuries-old rivalry between the Ottomans and the Persians.