Iranian lawmakers appeared ready to impose a ban on oil exports to Europe in retaliation for sanctions put in place by the European Union and the United States in January, state media reported Tuesday.
Iranian authorities are "intimidating and arresting people who they claim have connections with the BBC Persian service," the British broadcasting giant said Tuesday.
The United States has moved to freeze assets of Iran's government and financial institutions, saying they had engaged in "deceptive practices," President Barack Obama's administration announced Monday.
CNN's Chris Lawrence reports on how the U.S. is trying to understand Israel's intentions towards Iran.
There is a growing interest among U.S. foreign policy officials and scholars in deterring Iran; that is, in tolerating a nuclear armed Iran but keeping it at bay by threatening it in kind should it use its nuclear weapons. Although the Obama administration has not embraced this position, some observers believe this is the direction it is headed.
Iranian forces began a series of airborne war games Saturday aimed at improving combat preparedness, the semiofficial Fars News Agency reported.
Iran responds to Defense Secretary Leon Panetta's statement that an Israeli strike on Iran could come as early as spring.
The supreme leader of Iran issued a blunt warning Friday that war would be detrimental to the United States -- and that Iran is ready to help anyone who confronts "cancerous" Israel.
As a U.N. inspection team arrives in Iran, CNN's Matthew Chance explains the impact of sanctions on its economy.
The European Union approves new sanctions against Iran. CNN's Matthew Chance reports.
The United Nations nuclear monitors plan to return to Iran at the end of the month after a positive assessment from both sides of the latest visit.
Iran's oil minister said on Sunday that oil sales to "some countries" would be halted soon, amid pressure from the parliament that the government should pre-empt a looming European embargo.
Top International Atomic Energy Agency officials arrived in Iran Sunday, state media reported, after the head of the United Nations nuclear watchdog expressed fresh concerns that the Islamic republic was trying to develop nuclear weapons.
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."
In the face of economic sanctions and international condemnation, Iran remains defiant over its nuclear energy program.
Amos Yadlin, the recently retired chief of of Israeli military intelligence, discusses sanctions against Iran.
Iran summoned Denmark's ambassador to Tehran to protest a decision by the European Union to impose sanctions on Iran's oil imports, the semiofficial Fars News Agency reported.
Over the last few months Western governments have been tightening the economic noose around Iran.
Australia will follow the European Union's lead in imposing sanctions on Iran's oil imports, Foreign Secretary Kevin Rudd said Tuesday in London, amid international concern over Tehran's nuclear ambitions.
Flanked by British and French ships, the USS Abraham Lincoln aircraft carrier moved through the Strait of Hormuz without incident Sunday despite recent threats from Iran.
CNN's Josh Levs talks about how the international community is pressuring Iran to openly discuss its nuclear program.
Family and friends of a well-known literary translator in Iran are concerned for his well-being after he was detained for unknown reasons nearly two weeks ago.
Saudi Arabia's Prince Alwaleed bin Talal, the region's wealthiest businessman, talks about Iran and the Arab Spring.
The European Union is dialing up the pressure on Iran, saying Monday it will cut off oil imports and freeze assets in an effort to starve the country's nuclear program of funding.
Many in the West would like to see Iran punished for its nuclear ambitions. Tehran's residents would like those people to take a glimpse into their lives.
The history of U.S. sanctions against Iran dates as far back as 1979, when hostages were held at the U.S. Embassy in Tehran. Over the years, the U.S. government has approved other sanctions. In 2010, amid increasing tensions of Iran's nuclear program, the United States instituted sanctions that U.S. officials described as "unprecedented."
The European Union announced tough new sanctions on Iran Monday, banning the import of Iranian crude and other items, in a move designed to increase pressure against Tehran's nuclear program.
The European Union's announcement Monday that it will embargo Iranian oil and further restrict trade with the Islamic Republic is only the latest step in an extensive and growing international campaign aimed at destabilizing the regime in Tehran.
The European Union will announce tough new sanctions on Iran's oil industry Monday.
With fresh sanctions looming from the European Union, Iran has indicated it's ready to immediately resume talks with the international community over its nuclear program. On Friday, the international community challenged Iran to do just that.
University professor Hillary Mann Leverett discusses Iran's nuclear program and how it impacts Israel.
America's top military official began a series of high-profile meetings with Israeli leaders Friday amid growing international concerns that the Israeli government could act on its own to thwart Iran's nuclear program.
The aircraft carrier USS Abraham Lincoln arrived in the Arabian Sea on Thursday, Navy officials said, a likely prelude to testing Iran's recent warning against sending a U.S. carrier through the Strait of Hormuz.
Iran is facing an extensive and growing international campaign aimed at destabilizing its regime.
The United States is warning Iran of certain "red lines" they should not cross. CNN's Jill Dougherty reports.
Israel's Defense Minister Ehud Barak said Wednesday that a decision on whether to strike Iran's nuclear program was "very far off."
The U.S. has used multiple means of reaching out to Iran in response to Iran's threat to blockade the Strait of Hormuz, a critical transit point for one-fifth of the world's oil.
The U.S. military has postponed planned military exercises with Israel ahead of a scheduled visit by the chairman of the Joint Chiefs of Staff, U.S. and Israeli officials said Sunday.
Israel and the United States are "supporters of state terrorism" and will suffer a "punitive response" at an "opportune time," Iran's Press TV cited a top Iranian general as saying Sunday, days after an Iranian nuclear scientist was killed.
Robert Baer tells Anderson Cooper he believes a dissident group was involved in the death of a nuclear scientist.
At a time of heightened tensions with Iran, U.S. military officials told CNN Friday that U.S. military and Coast Guard ships had two close encounters earlier this month with high-speed Iranian boats in the Strait of Hormuz and Persian Gulf that exhibited provocative behavior.
Iran's top cleric has blamed the CIA and Mossad, Israel's intelligence agency, for killing an Iranian nuclear scientist, Iran's state broadcaster said.
Despite tightening sanctions on Iran's oil industry, experts say the country's crude should still flow -- but perhaps at a deep discount.
Zain Verjee speaks to the lawyer hired to defend an American sentenced to death in Iran for espionage.
When two important countries appear to be goading each other into a dangerous and meaningless war, it can be useful to take a deep breath, lay the rhetoric aside for a moment, and go back to basics.
Talks between the U.S. and China centered on Iran's nuclear program and the global economy. Eunice Yoon reports.
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.
It's a question many people inside Iran -- and those who watch the country closely around the world -- were asking Wednesday: Who is killing nuclear scientists in Iran?
Secretary of State Hillary Clinton categorically denies U.S. involvement in the killing of an Iranian nuclear scientist.
U.S. Treasury Secretary Timothy Geithner met Chinese leaders on Wednesday with discussions expected to focus on cooperation between the world's top two economies to bolster global growth as well as possible sanctions on Iranian oil exports.
For most of my life, I've had a relationship with Iran, mostly good, but which included a long period in which Iran hurt me and other foreign service officers greatly.
Iran has sentenced a former U.S. Marine to death, accusing him of espionage.
CNN's Brian Todd reports on the death sentence handed by Iran to an ex-American Marine for espionage.
The United Nations' nuclear watchdog agency confirmed Monday that uranium enrichment has begun at a nuclear facility in northern Iran.
Beef from Brazil is on Iranian dinner tables. An Iranian-built hospital treats patients near Bolivia's capital. Iranian-funded factories dot the Venezuelan countryside.
Iran's Bushehr nuclear power plant is just weeks from operating at full capacity, the country's top nuclear official said Saturday.
Closing waterways and firing missiles. What's Iran's real plan? CNN's Chris Lawrence reports.
Iran on Saturday welcomed the rescue of 13 Iranian sailors by a U.S. Navy ship, calling it a "humanitarian act."
The Europe Union foreign policy chief Catherine Ashton demanded Friday that Iran halt the pending executions of a woman sentenced to die by stoning and a Christian pastor convicted of apostasy.
Despite the uptick in oil prices thanks to Iran's threats last week, experts don't foresee a major oil price spike even as evidence mounts that tougher oil sanctions against the country are beginning to bite.
Oil prices surged 4% Tuesday, fueled by continued anxiety over Iran's growing threat to shut down the Strait of Hormuz after the Iranian military launched a missile test.
Iran warned the United States Tuesday not to return a U.S. aircraft carrier "to the Persian Gulf region."
Iran test-fired two missiles Monday, the final day of its naval exercises in the Strait of Hormuz, state-run media reported.
Iran has succeeded in building and testing the country's first domestically produced nuclear fuel rod, the semi-official Fars news agency reported Sunday.
The U.S. Navy warns Iran on its threat to shut down the Strait of Hormuz, saying any disruption "will not be tolerated."
Another round of talks between Iran and world powers is expected to be held soon, Iran's ambassador to Germany said.
Iran's vice president has warned that the country could block the Strait of Hormuz if sanctions are imposed on its exports of crude oil. What does the threat mean and what is likely to happen next?
"We are determined to prevent Iran from acquiring nuclear weapons."
Iran claims it "brought down" the U.S. spy drone, but security expert Chad Sweet has an alternative theory on how it landed.
Iran has threatened that it will retaliate against the Obama administration's proposed new economic sanctions on Iran's oil exports by blocking the flow of oil from the Persian Gulf. "If sanctions are adopted against Iranian oil," said Iran's Vice President Mohammad Reza Rahimi, "not a drop of oil will pass through the Strait of Hormuz," the narrow waterway at the mouth of the Persian Gulf, which one-fifth of the world's oil supply passes through daily.
Iranian threats to cut off access to the Strait of Hormuz have elicited warnings from the United States.
The mother of an American on trial in Iran denied allegations that her son is a spy for the CIA, saying that anything he confessed to was coerced.
The Obama administration said Iran has been "saber-rattling" over its threat to block the strategically important Strait of Hormuz and renewed its vow Thursday to keep the corridor open.
It is just 34 miles (55 kilometers) wide and dotted with islands and rocky outcrops, a channel that links the Persian Gulf with the Indian Ocean. Like many marine chokepoints, the Strait of Hormuz has long commanded the attention of empires and their navies.
Oil prices jumped over 2% Tuesday, crossing the $100-barrel-mark after Iran threatened to choke off the flow of oil passing through the Strait of Hormuz.
A man accused of being an American spy in Iran told a judge Tuesday that his mission was to deliver information to Iranian intelligence circles, the semi-official Fars news agency reported.
Iran's Navy ordered a helicopter from an unspecified foreign country to leave to leave the area of maneuvers it is conducting in the Persian Gulf, the semi-official Fars News Agency reported Monday.
"The Iran Job" follows American basketball player Kevin Sheppard as he plays in Iran. By Sara Nodjoumi and Till Schauder
In March 2009, when I was detained in Evin Prison in Iran, two evangelical Christians were arrested. I never met them but spotted them a few times through the barred window of my cell as they walked back and forth to the bathroom down the hall.
An Iranian-American man held on spying charges in Iran must be tried there, the spokesman for a key parliamentary committee said Wednesday, according to the semi-official Mehr news agency.
A day after Iranian TV broadcast video of what it called the confession of a U.S. spy, a State Department official confirmed the identity of the man in Iranian custody and called for his release "without delay."
Russian authorities seized radioactive material from the luggage of a passenger on a flight from Moscow to Tehran.
Russian authorities on Friday seized radioactive material from the luggage of a passenger on a flight from Moscow to Tehran, Iran.
CNN's Barbara Starr looks at whether more Iran sanctions could hurt the U.S. economy.
The South Korean government announced expanded sanctions against Iran Friday, blacklisting more than 100 firms and individuals.
When Rep. Michele Bachmann said that a report by the United Nations' International Atomic Energy Agency had described Iran as poised to join the world's elite club of nuclear powers, during Thursday's Republican candidates' debate in Sioux City, Iowa, Rep. Ron Paul of Texas responded immediately that she was mistaken.
While the Obama administration has shown signs of supporting legislation that would increase pressure on the Iran's central bank, the administration is taking a cautious approach to how the provision should be implemented.
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.
President Barack Obama said Monday that the United States has asked Iran to return a U.S. drone aircraft that Iran claims it recently brought down in Iranian territory.
Iran will not return an unmanned American stealth plane that it says it has, one of Iran's top generals said, according to the semi-official Fars news agency on Sunday.
Iranian TV aired images of what it says is a U.S. stealth drone that went down in Iran. CNN's Chris Lawrence reports.
CNN's Erin Burnett talks to Iranian Ambassador Mohammad Khazaee about the U.S. drone that crashed in Iran.
Iranian TV aired images Thursday of what it says is a U.S. stealth drone that went down in Iran last week, an apparently intact RQ-170 drone propped on a pedestal and triumphantly displayed.
A U.S. stealth drone that crashed in Iran last week was part of a CIA reconnaissance mission which involved both the intelligence community and military personnel stationed in Afghanistan, two U.S. officials confirmed to CNN Tuesday.
A leader of the United Arab Emirates discounted concerns about a nuclear-armed Iran in a CNN interview Monday, saying Tehran would find the ultimate weapon to be of little use.
Undaunted by new sanctions on its energy sector, Iran's oil minister said Monday that improved access to technology for oil-producing countries is one of the best ways to ensure a constant supply of energy in the years ahead.
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