Iran has now released a video of the 15 detainees in which one of them speaks.
Iran has denied pursuing nuclear weapons and insists the country's nuclear program is for peaceful purposes.
CNN: Report: Iran could have enough material for nuke in months
Iran has in the past declined to discuss any allegations of arms deals with North Korea.
However, Iran has other investors and suppliers and the practical effects remain to be determined.
But Iran has again refused to meet a key condition that the Russians have set.
Iran has halted oil sales to British and French companies, the nation's oil ministry has said.
Can you elaborate more on what role the U.S. sees Iran has been playing?
But Iran has obligations as part of the NPT that it must live up to.
Iran has repeatedly said none of its nationals were involved in the 1994 bombing.
BBC: Bolivia apologises to Argentina for Iran minister visit
"Iran has ambitions toward Iraq, " said Amer Naji, a cafe regular and a former Iraqi diplomat.
CNN: 6 years later, progress and doubts are legacy of Iraq war
Iran has a nuclear development program that it insists is for peaceful energy purposes.
Iran has never permitted al Qaeda to have any activity or operation from or inside Iran.
Iran has no need for weapons to be manufactured in Sudan, the Foreign Ministry statement insisted.
CNN: Report: Iranian warships dock in Sudan in show of support
While ignoring the stick of sanctions, Iran has also dismissed the many proffered carrots.
News coverage in Iran has been limited by government restrictions on international journalists.
CNN: Iran media: Council rejects claims of voting irregularities
Each expert CNN spoke with pointed out that Iran has a nuclear program.
Iran has tried to strengthen ties with Venezuela, Ecuador, Bolivia, Cuba, and until recently, Brazil.
Iran has carried out a number of operations where it has not assumed responsibility for them.
In recent years, Iran has expanded its sphere of influence to strategic points around the region.
Rand Corporation scholar Gregory S. Jones wrote this month that Iran has reached nuclear breakout capacity.
Iran has now formally complained about the US intrusion into its airspace and asked for compensation.
In the past year Iran has deepened its strategic ties with China and Russia.
The length of the negotiating process with Iran has also brought them closer together.
In the meantime, the rest of the world's response to events in Iran has been discouraging.
Foreign Secretary William Hague has said Iran has been testing missiles capable of carrying a nuclear warhead.
So far Iran has said nothing publicly and apparently given no clear response through diplomatic channels either.
Iran has clear interest in what's going on in Iraq, and it has apparently been active there.
NPR: Russia in the Middle of Stalled U.N.-Iran Nuclear Talks
Iran has already conceded to allow nuclear inspectors to come to Iran before the end of January.
Despite Mr Sokolski's scepticism, for the time being at least Western policy towards Iran has two elements.
Iran has signed the Nuclear Non-Proliferation Treaty but not the brand-new protocol that allows for intrusive inspections.
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