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Researchers at Symantec Corp. have uncovered a version of the Stuxnet computer virus that was used to attack Iran's nuclear program in November 2007, two years earlier than previously thought.
Iran claimed to have uncovered new deposits of uranium ahead of talks with world powers on its nuclear capacity.
A U.N. nuclear watchdog report due this week is expected to reveal a slowdown in the growth of Iran's stockpile of higher-grade enriched uranium as it is using some of the material to make reactor fuel, diplomats said on Wednesday.
U.N. nuclear inspectors have seen a small number of advanced centrifuges at an uranium enrichment plant where Iran has said it will install and operate them, a diplomatic source said on Thursday.
Iran announced that is converting some of its enriched uranium to reactor fuel.
Iran will upgrade the nuclear enrichment equipment at its Natanz nuclear plant.
Western and Israeli security experts suspect Syria may have tonnes of unenriched uranium in storage and that any such stockpile could potentially be of interest to its ally Iran for use in Tehran's own disputed nuclear program.
Officials are concerned that a stockpile of unenriched uranium in Syria, enough to make five nuclear bombs, could fall into the hands of Iran.
Iran and the six major world powers it deals with on nuclear issues are preparing for talks, according to multiple reports.
Iran is getting ever closer to being able to build a nuclear bomb and the problem will have to be confronted in 2013, Israeli Prime Minister Benjamin Netanyahu said on Monday.
Outgoing Israeli Defense Minister Ehud Barak will receive the highest award he could be given by a U.S. secretary of defense when he visits the Pentagon on Thursday, three days after announcing his exit from political life next year.
The head of Iran's Atomic Energy Organization said his country would continue to enrich uranium "with intensity."
The debate about red lines on Iran appears to be over. With its massive increase of operative centrifuges at a secured uranium enrichment site, Iran appears to have moved beyond the question of whether capability to build a nuclear weapon or actual acquisition of a nuclear weapon is the appropriate red line.
Iran is set to sharply expand its uranium enrichment in an underground site after installing all the centrifuges it was built for, a U.N. nuclear report showed on Friday, a move that could increase Western alarm about Tehran's nuclear course.
Iran has pulled back from the brink of achieving a nuclear weapon, opting to use over a third of its medium-enriched uranium for civilian purposes, Israeli Defense Minister Ehud Barak told a British newspaper.
Israeli Prime Minister Benjamin Netanyahu sought on Tuesday to convince Arab states that an Israeli military strike on Iran would benefit them, removing a potential threat and easing tensions across the Middle East.
The moment in the final presidential debate when President Obama described his visit to Israel’s national Holocaust museum and to the rocket-battered town of Sderot seemed to be aimed right for the kishkes.
Iran appears to be nearly finished installing centrifuges at one of its underground plants, drawing it still closer to making weapons-grade uranium.
The New York Times reported on Saturday that the United States and Iran have agreed in principle to hold one-on-one negotiations on Iran's nuclear program but the White House quickly denied that any talks had been set.
Iran is believed to be further increasing its uranium enrichment capacity at its Fordow plant buried deep underground, Western diplomats say, in another sign of Tehran defying international demands to curb its disputed nuclear program.
Mitt Romney has said that he and Benjamin Netanyahu would employ the same "test" for Iran's nuclear program, but that a strike was “a long way” off.
Iranian officials reportedly offered a nine-step plan to defuse the nuclear crisis with the West that was rejected by U.S. officials.
When Israeli Prime Minister Benjamin Netanyahu pulled out a cartoon drawing of a bomb during his speech to the 67th United Nations General Assembly Debate on Sept. 27, the world laughed. But I didn’t.
Iran would enrich uranium up to 60 percent purity if negotiations with major powers over its nuclear program fail, an Iranian lawmaker said on Tuesday, in comments that may add to Western alarm about Iranian intentions.
Israeli Prime Minister Benjamin Netanyahu made a persuasive case at the United Nations General Assembly Thursday for a clear red line to ward off Iran’s nuclear weapons program. Time is running out and the United States should listen to the Israeli leader and draw a clear line for Tehran.
Prime Minister Benjamin Netanyahu's U.N. speech about Iranian nuclear advances has dampened speculation in Israel that he could order a war this year.
Republican presidential nominee Mitt Romney suggested that he had the same “red line” as President Obama on Iran but a different strategy to prevent the Islamic Republic from crossing it.
Prime Minister Benjamin Netanyahu said Israel and the United States were in talks on setting a "clear red line" for Iran's nuclear program, but the two allies remained at odds on Monday over whether to spell out a clear threshold for military action against Tehran.
Iran has doubled the number of uranium enrichment machines it has in an underground bunker, a U.N. report said on Thursday, showing Tehran continued to defy Western pressure to stop its atomic work and the threat of Israeli attack. In the weeks and months when Israeli politicians increased their talk of air strikes on Iran’s nuclear sites, the Islamic Republic was rapidly increasing the enrichment capacity of its Fordow site, buried deep underground to withstand any such hit.
Iran may have installed as many as "hundreds of new" uranium enrichment machines in its underground nuclear facility at Fordow.
War with Iran would probably turn into a month-long conflict on various fronts with missile strikes on Israeli cities and some 500 dead, Israel's civil defense minister said in an interview published on Wednesday.
The U.S. assessment remains that Iran is not on the verge of achieving a nuclear weapon, a U.S. official said, apparently pushing back against claims to the contrary by Israeli Defense Minister Ehud Barak.
Two days before his visit to Israel, Defense Secretary Leon Panetta said that though tough international sanctions have not yet caused Iran to drop its nuclear ambitions, they would eventually persuade the regime to “do what’s right.”
Iranian Supreme Leader Ayatollah Ali Khamenei on Wednesday dismissed harsher sanctions imposed on Iran this month over its disputed nuclear activity, saying the country was "100 times stronger" than before.
Iran said on Tuesday it had successfully tested medium-range missiles capable of hitting Israel in response to threats of military action against the country, Iranian media reported, the latest move in a war of nerves with the West.
Israel has responded to the failure of the latest nuclear talks between world powers and Iran with a familiar refrain: sanctions must be ramped up while the clock ticks down toward possible military action.
The United States is conferring with Israel about new sanctions planned against Iran should international negotiations this month fail to curb the Islamic Republic's nuclear program, a U.S. official said on Monday.
New satellite images show possible recent nuclear activity at the Parchin facility in Iran as well as attempts to hide evidence of past activity.
Evidence found in an underground bunker in Iran could signal the country’s having moved one step closer toward the uranium threshold needed to make nuclear arms, International Atomic Energy Agency diplomats said today.
Iran's insistence that world powers acknowledge what it sees as its right to enrich uranium emerged as a significant difference in international talks on its nuclear energy programme this week, a senior U.S. administration official said.
Israeli Defense Minister Ehud Barak will meet with his U.S. counterpart, Leon Panetta, in Washington amid reports that Iran may have achieved the capability to build a nuclear bomb.
Facing an imminent toughening of sanctions, Iran is hinting at a readiness to give some ground in its long nuclear stand-off with world powers, but any flexibility could split their ranks and lead to protracted uncertainty about how to respond.
Israel still has time to strike Iran and the right to decide for itself whether to do so, Vice President Joe Biden said.
Israel did not promise the United States that it would abstain from attacking Iran while negotiations are going on, Israeli Defense Minister Ehud Barak said.
Iran and the six world powers prepared on Friday for rare talks aimed at easing fears that a deepening dispute over the Islamic Republic's nuclear program could plunge the Middle East into a new war.
Time is not infinite for nuclear talks between Iran and the West, a White House said on Monday, five days before a planned round of talks was set to begin, adding that the window of opportunity in which a diplomatic solution can be reached is closing.
Israel on Friday took its concern about Iran's nuclear programme to one of Iran's main partners, China, and hinted it could launch a preemptive attack on the Islamic Republic despite repeated calls by China to allow diplomacy to take its course.
The window for Iran to resolve its differences with the West through diplomacy is shrinking, President Obama said.
Iran's envoy to France said Tehran was optimistic about new talks with world powers on its nuclear program but Iran would not negotiate on its right to enrich uranium.
Iran will allow inspectors from the United Nations' nuclear watchdog group to visit a suspected nuclear site on a military base near Tehran.
President Obama said it was still possible to resolve Iran's suspected bid for a nuclear weapon through diplomacy, but added that a military option was still on the table and that containment was not an option.
Iran's parliamentary election this Friday is a potentially decisive battle in the struggle between political and religious hardliners, but it is unlikely to alter Tehran's stand on its deadlock with the West over its nuclear program.
Iran has yet to give an explanation over a small quantity of uranium metal missing from a research site, the U.N. nuclear watchdog said in a report that voiced concern over possible military links to Tehran's nuclear program.
Ever since their first awkward encounter - a hastily arranged meeting in a custodian's office at a Washington airport in 2007 - Iran has been one of the few issues on which Barack Obama and Benjamin Netanyahu have been able to find some common ground.
The U.N. nuclear watchdog ended its latest mission to Iran after talks on Tehran's suspected secret atomic weapons research failed, a setback likely to increase the risk of confrontation with the West.
Russia warned Israel on Wednesday that attacking Iran would be a disastrous and played down the failure of a U.N. nuclear agency mission to Tehran, saying there is still a chance for new talks over the Iranian atomic program.
Iran proclaimed advances in nuclear know-how on Wednesday, including new centrifuges able to enrich uranium much faster, a move that may hasten a drift towards confrontation with the West over suspicions it is seeking the means to make atomic bombs.
Homeland Security Secretary Janet Napolitano and top U.S. security officials told Jewish community leaders there is no imminent threat of an attack on Jewish targets in the United States.
Iran castigated its U.S. adversary on Tuesday over new financial measures to disrupt Iranian commerce, and a default on payment for rice purchases highlighted the encroachment of sanctions on the staples of everyday life.
Iran's supreme leader threatened on Friday to retaliate against the West for sanctions, a day after a U.S. newspaper said defense secretary Leon Panetta believed Israel was likely to bomb Iran within months to stop it building a nuclear bomb.