Iran's envoy to the International Atomic Energy Agency said Friday he is hopeful that the recent planned visit by representatives of the nuclear watchdog will "resolve any ambiguity and show (our) transparency and cooperation with the agency."
Iran has issued an impassioned letter to the United Nations Secretary General charging that the killings of Iranian nuclear scientists were terror attacks that followed a clear pattern -- an assertion the country's ambassador to the United Nations repeated to CNN in an interview Wednesday night.
A nuclear scientist was killed in a blast in Tehran on Wednesday morning, an Iranian news agency reported, in the latest in a string of attacks that Iran has blamed on Israel.
The United Nations' nuclear watchdog agency confirmed Monday that uranium enrichment has begun at a nuclear facility in northern Iran.
Iran's Bushehr nuclear power plant is just weeks from operating at full capacity, the country's top nuclear official said Saturday.
Iran has succeeded in building and testing the country's first domestically produced nuclear fuel rod, the semi-official Fars news agency reported Sunday.
Another round of talks between Iran and world powers is expected to be held soon, Iran's ambassador to Germany said.
Google CEO Eric Schmidt talks to CNN's Erin Burnett about the downed drone in Iran and cybersecurity.
Some analysts have attributed the recent downing of a U.S. RQ-170 Sentinel high-altitude reconnaissance drone in Iran to that nation's increasingly sophisticated capability to launch cyber attacks. Others have dismissed the idea that Iran was capable of bringing down an RQ-170, arguing that Iranian air defenses do not have the capability to track an aircraft with radar-evading technology.
Treasury Secretary Timothy Geithner and Secretary of State Hillary Clinton discuss new sanctions aimed at Iran.
Russia called new sanctions against Iran "unacceptable," saying the new punishments would hurt efforts to talk with Tehran.
The United States announced tougher sanctions against Iran on Monday, joining Britain and Canada in a coordinated effort to tighten the screws around the country's suspected nuclear weapons program.
Britain cut all financial ties Monday with Iran over concerns about Iran's nuclear program, the first time it has ever cut an entire country's banking sector off from British finance, the British Treasury announced.
The United States will name Iran, as well as its Central Bank, as a "primary money laundering concern" Monday, but will not place sanctions directly on the bank, a senior Treasury Department official said.
The U.N. nuclear watchdog's governing council adopted a resolution Friday expressing "deep and increasing concern about the unresolved issues regarding the Iranian nuclear program."
The Obama administration plans to impose fresh sanctions against Iran's petrochemical industry, diplomatic sources familiar with the plans said Friday.
A former NATO supreme allied commander says the Iranian regime seems determined to move ahead with their nuclear program.
For the better part of a decade, the world has seen an episodic stream of predictions that Iran was on the cusp of building a nuclear weapon and that an Israeli or American pre-emptive military strike was imminent. Alarming forecasts are again gaining currency because of a new assessment issued by the United Nations nuclear watchdog: The International Atomic Energy Agency reported last week that Iran appears to be trying to develop a nuclear weapon.
Fareed's take on Iran's nuclear program.
A forthcoming report from the U.N. nuclear watchdog is expected to shed light on how advanced Iran's nuclear program is.
A new International Atomic Energy Agency report on Iran's nuclear activities brings efforts to resolve the crisis to a very "dangerous turning point," an expert on the region said Wednesday.
World powers expressed alarm Wednesday about a critical report documenting Iran's progress toward making a nuclear bomb, with the British foreign secretary warning that his nation would take strong measures if the Islamic republic did not change direction.
CNN's Max Foster talks to the Iranian ambassador to the IAEA who defends his country's nuclear aspirations.
The International Atomic Energy Agency issued a critical report Tuesday saying that it has "serious concerns" about Iran's nuclear program and has obtained "credible" information that the Islamic republic may be developing nuclear weapons.
CNN's Jill Dougherty reports on the IAEA report that shows Iran is capable of building nuclear weapon.
An International Atomic Energy Agency report to be released this week will say that Iran has mastered the critical steps necessary to design and construct a nuclear weapon, Western diplomats briefed on the report told CNN Monday.
The upcoming report by the International Atomic Energy Agency will make the most detailed charges to date that Iran's nuclear program is geared toward weapons development and military use, several Western diplomats briefed on the report told CNN.
The upcoming report by the IAEA will make the case that Iran's nuclear program is geared toward weapons development.
China's Foreign Ministry weighed in on the widespread anxiety over Iran's nuclear program on Friday, urging Iran to be flexible with the U.N. nuclear agency but staunchly deploring force amid talk of strikes against the country.
Iran's efforts to develop its nuclear program have been stymied by a raft of challenges from international sanctions and set back by the 2010 Stuxnet cyberattack, two new reports from a Washington nuclear think tank conclude.
New imagery posted on Google Earth shows evidence Iran continues to build out its nuclear sites, according to a group focused on stopping the spread of nuclear weapons and related technology.
Washington greeted this week's inauguration of Iran's first nuclear power plant with a chorus of concerns about the Iranian threat and the prospects of proliferation across the Middle East. This alarmism is neither unexpected nor unjustified. However in the case of the Bushehr reactor, it is somewhat misdirected.
Iran plans a ceremony to launch a controversial nuclear power plant Monday, the country's government-backed Press TV reported, making it the first nation in the Middle East to put a civilian nuclear power plant online.
Iran plans a ceremony to launch a controversial nuclear power plant Monday, the country's government-backed Press TV reported, making it the first nation in the Middle East to put a civilian nuclear power plant online.
Iran says its Bushehr nuclear power plant is now online, making it the first Middle Eastern country to produce commercial electricity from atomic reactors.
An International Atomic Energy Agency report, dated and leaked Friday, said Iran continues to defy U.N. resolutions aimed at curbing its nuclear program and cited "increasing" concerns it may be developing nuclear weapons
The French Foreign Ministry condemned Tuesday the Iranian government's announcement that it was installing a new generation of centrifuges in its nuclear facilities, describing it as "a new wave of provocation" that flouts United Nations resolutions.
Iran has been carrying out covert tests of missiles capable of delivering a nuclear payload, UK Foreign Secretary William Hague said Wednesday, in contravention of a U.N. resolution.
2010: CNN's Joe Johns talks to David Sanger of the New York Times about a WikiLeaks dump.
The United Nations' nuclear watchdog agency Thursday found that Syria built a covert nuclear reactor and failed to comply with demands for information on the facility.
In a possible setback to its nuclear program, Iran is unloading fuel assemblies from the reactor at a plant already plagued by delays, according to a report issued Friday by the global nuclear watchdog agency.
Additional information received recently by a United Nations watchdog group raises new concerns about the intent of Iran's nuclear program.
CNN's Jonathan Mann has an exclusive interview with Iran's Chief Nuclear Negotiator Saeed Jalili about the talks.
Senators John Kerry and Richard Lugar react to the ratification of the nuclear arms control treaty with Russia.
The lower house of the Russian parliament gave preliminary approval Friday to START, a nuclear arms reduction treaty between Russia and the United States.
Russian President Dmitry Medvedev on Thursday congratulated President Barack Obama on the Senate's approval of a new nuclear arms control treaty between the countries, the White House said.
The Senate ratifies the START treaty which will allow inspections to resume and weapons arsenals to be limited.
CNN's Wolf Blitzer reports on the latest meeting Gov. Bill Richardson had with North Korean officials.
Iranian officials have been talking with the United States and other countries trying to put the brakes on Tehran's nuclear program. On Sunday, the head of Iran's Atomic Energy Organization said Iran is now producing its own yellowcake and is self-sufficient in the nuclear fuel cycle.
Iran now produces everything it needs for the nuclear fuel cycle, making its nuclear program self-sufficient, the head of the country's Atomic Energy Organization told state media Sunday.
Iran blasted a nuclear fuel bank approved by the world's main nuclear watchdog agency, saying the idea amounts to "nuclear apartheid."
Iranian President Mahmoud Ahmadinejad said Tuesday that Iran has agreed to another round of nuclear talks with the United States and other nations.
North Korea's latest revelations about its uranium-enrichment program confirm the country's long-term deceit, U.S. and South Korean diplomats said Monday.
Has North Korea succeeded in developing an advanced uranium enriched nuclear facility? CNN's Jill Dougherty reports.
A U.S. State Department team arrived in South Korea on Monday in response to a U.S. scientist's report that North Korea has a new uranium enrichment facility.
Iran's foreign minister said nuclear talks with world powers could take place in mid-November, Iranian news agencies said Saturday.
The architect of North Korea's nuclear arms program has been promoted to vice premier of the country's Cabinet, state-run media said on Thursday.
The United Nations nuclear watchdog agency begins its annual meeting Monday, where it looks set to wrestle with how to deal with Iran, North Korea, Syria and Israel.
Supporters of an Iranian opposition group announced Thursday that they have "exclusive" details on a major top-secret strategic nuclear enrichment site buried deep in a mountain northwest of Tehran, but U.S. government officials and nuclear experts are not convinced.
South Korea on Wednesday announced sanctions against Iran -- including government scrutiny of most financial transactions involving the country -- as part of global efforts to quash Tehran's suspected nuclear program.
In defiance of U.N. Security Council resolutions, Iran continues its uranium enrichment activities, according to a report by the International Atomic Energy Agency released Monday.
Russia's top nuclear official Thursday called the pending supply of nuclear fuel to Iran's first atomic energy plant "an event of crucial importance" that proves that "Russia always fulfills its (international) obligations."
President Barack Obama has a chance to make good on the campaign pledge he made during the CNN/YouTube debate back in 2008: to sit down with Iranian President Mahmoud Ahmadinejad.
Iran submitted a letter to the International Atomic Energy Agency on Monday, proposing to restart limited talks on an exchange of nuclear fuel.
Iran has offered to restart limited talks on a proposed exchange of nuclear fuel after Sunday talks with Brazil and Turkey over Tehran's nuclear program.
The head of Iran's nuclear energy agency announced Saturday that the country had launched a "serious" nuclear fusion research program, according to state-run Press TV.
President Barack Obama on Thursday signed into law new U.S. sanctions on Iran that he called another step in demonstrating that "the United States and the international community are determined to prevent Iran from acquiring nuclear weapons."
Iran is prepared to resume talks over its nuclear program but will wait until late August as punishment for recently imposed U.N. sanctions, President Mahmoud Ahmadinejad said Monday.
The United Nations Security Council voted Wednesday to impose new sanctions on Iran to try to force it to suspend its nuclear program.
Pres. Obama says Iran has failed to comply with nuclear treaties and therefore will have to suffer the consequences.
The final document from the just-completed U.N. review conference on the Nuclear Non-Proliferation Treaty "not only fails to advance regional security but actually sets it back," the Israeli government said in a statement released Saturday.
Iran says it will formally notify the U.N. nuclear watchdog agency on Monday of its nuclear swap agreement with Turkey, according to state-run media.
At first glance, the agreement announced this week by Brazil, Turkey and Iran to ship 1,200 kilograms of Iran's low-enriched uranium to Turkey in exchange for about 120 kilograms of fuel for the Tehran Research Reactor within a year looks remarkably similar to the deal the International Atomic Energy Agency brokered in October.
Secretary of State Hillary Clinton faced off with Iranian President Mahmoud Ahmadinejad at the United Nations on Monday, accusing Tehran of "flouting the rules" of the Nuclear Non-proliferation Treaty and calling for "a strong international response."
CNN's Jill Dougherty examines how Iran will dominate the Nuclear Nonproliferation conference at the United Nations.
Iranian President Mahmoud Ahmadinejad left Sunday for the United States to take part in a conference on nuclear nonproliferation, a Foreign Ministry spokesman told state television.
Just days before his planned trip to New York, Iranian President Mahmoud Ahmadinejad said he has proof the United States and Israel are linked to the world's leading terrorist organizations, according to state-run media.
Hillary Clinton hopes Iran will abide by nonproliferation requirements and gives her take on a new law in Arizona.
Is Iran's uranium enrichment move meant to divert attention from its human rights record? CNN's Ivan Watson reports.
Iranian Foreign Minister Manouchehr Mottaki on Sunday met with the head of the U.N.'s nuclear watchdog agency to discuss a plan to swap uranium for a nuclear research reactor in Tehran.
President Obama talks Iran sanctions and strong nuclear security at the nuclear summit in Washington.
President Obama said Tuesday that the 47-nation nuclear security summit he convened raised global awareness of the threat of nuclear terrorism and yielded commitments to better secure nuclear arsenals and materials.
President Obama met individually with some visiting foreign leaders Monday before the start of a two-day summit of 47 nations that will focus on how to better safeguard nuclear weapons materials, both old and new, to keep them out of the hands of terrorists.
President Obama and Chinese President Hu Jintao held a private meeting Monday before the start of a nuclear security summit, with the focus on Iran -- and its opposition to the nuclear nonproliferation agreement.
President Obama meets with world leaders ahead of a summit on nuclear security and threats.
Turkey's prime minister declined to support President Barack Obama's push for tough new sanctions against Iran but said his country was willing to act as a mediator in the diplomatic standoff over Tehran's nuclear ambitions.
China hopes negotiations will avert new sanctions against Iran. CNN's John Vause reports.
If U.S. officials are correct, China could be poised to lend crucial support to White House efforts to curb Iran's nuclear ambitions.
Presidents are extremely reluctant to limit their freedom to act before circumstances force them to make choices. "I'm not going to answer hypothetical questions" is often heard from the presidential podium.
America's new nuclear weapons posture, released yesterday by the Obama administration, gives much-needed momentum to the nuclear agenda President Obama set out in Prague last year.
As heat builds for tougher sanctions against Iran, CNN's Jill Dougherty looks the administration's policy of engagement.
As the United States steps up its push for tough new sanctions against Iran, a top American diplomat said Thursday that hopes of a deal with Iran to curb its nuclear ambitions are fading.
North Korea vowed Friday not to dismantle its nuclear program -- not even in exchange for economic aid -- as long as the United States continues a "hostile policy."
A new report saying that Iran could be secretly working on a nuclear weapon is a major development, but not one that should lead the U.S. to consider a military strike against the Tehran regime, according to analyst Fareed Zakaria.
In a draft report, the IAEA director general says Iran may currently be working on developing a nuclear warhead for a missile.
Iran's supreme leader said Friday the Islamic republic isn't seeking and doesn't believe in pursuing nuclear bombs.
Iran may be working on secretly developing a nuclear warhead for a missile, the head of the United Nations' nuclear watchdog agency said Thursday in a draft report.
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