Correspondents say this is the International Atomic Energy Agency's toughest report on Iran to date.
BBC: UN nuclear agency IAEA: Iran 'studying nuclear weapons'
Iran is expected to attend another round of negotiations on 26 February in Kazakhstan.
Iran confirmed in mid-May that it was detaining Esfandiari and charged her later that month.
The BBC's Bethany Bell, in Vienna, has examined the IAEA's latest quarterly report on Iran's nuclear programme.
BBC: UN nuclear agency IAEA: Iran 'studying nuclear weapons'
In 1987, Gangel covered the Iran-Iraq war as part of the Pentagon pool in the Persian Gulf.
Today Iran said it plans to resume work at one of its nuclear plants early next week.
He pointed to the speed of Iran's nuclear work, Israeli military threats, and deepening sanctions, alongside the negotiations.
Iran had said it wanted Total to commit by the middle of the year.
Total, the French oil company, is the latest to voice its concerns about investing in Iran.
Herat province borders Iran and boasts a 5, 000-year history known for art and scholarship.
Iran has now released a video of the 15 detainees in which one of them speaks.
In Malaysia, exporters have stopped selling palm oil to Iran, because they cannot get paid.
However, he failed to mention any serious steps Iran would take to achieve that goal.
Both say they want to prevent Iran from gaining the technology to build a nuclear bomb.
The United States remains committed to a diplomatic solution, but the onus is on Iran.
Iran's semi-official Fars News Agency also reported that Khatami formally declared his candidacy on Sunday.
CNN: Top Iranian reformer to challenge Ahmadinejad, reports say
Iran's Hadi Saei won the men's 80kg taekwondo gold, defeating Italy's Mauro Sarmiento in the final.
"Iran's delegation can't go home and say it is a good offer, " said the diplomat.
What is your strategy for engaging Iran, and when will you start to implement it?
Syria will feel even more isolated and embarrassed if its sole solid ally is Iran.
ECONOMIST: As the turmoil persists, more Syrians are leaving or hiding
Stern concludes that Iran may need nuclear power as their energy supply is dwindling.
Amirahmadi is known among many Iranian-Americans in the United States as well as people inside Iran.
He added that Iran was actively supporting Hezbollah's involvement - a claim denied by Tehran.
For three decades, the United States and Iran have been alienated from one another.
Another more rational explanation is that Iran threatened missile strikes only to keep oil prices high.
Iran's main ally in the region, the Syrian government, has other things on its mind.
Mr Netanyahu has gone along with the Obama administration's decision to talk directly to Iran.
Yet Iran, vast and restive, had a way of revealing itself, even in bad times.
The incident led to a breaking of all ties between Iran and the Netherlands.
Soon after the new law was passed, Japan and ten EU countries reduced trade with Iran.
ECONOMIST: America is using the dollar to hurt Iran. Will it work?
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