++AP Television is adhering to Iranian law that stipulates all media are banned from providing BBC Persian or VOA Persian any coverage from Iran, and under this law if any media violate this ban the Iranian authorities can immediately shut down that organisation in Tehran.++
1. High-angle view of Shahram Amiri, Iranian nuclear scientist, in IRIB studio during interview
2. Mid of journalist asking a question
3. SOUNDBITE: (Farsi) Shahram Amiri, Iranian nuclear scientist allegedly abducted and freed by the US:
"I was told (by the Americans) that if I would confess that I was a member of Iran's intelligence agency and was arrested while spying for Iran in another country, they could swap me for three American spies who had been detained at Iran-Iraq border (referring to the three American hikers detained in Iran for straying into Iranian borders). They said that it was a common process between countries' intelligence agencies and that I would not have any problems."
4. Mid of Amiri being interviewed
5. SOUNDBITE: (Farsi) Shahram Amiri, Iranian nuclear scientist allegedly abducted and freed by the US:
"I totally trusted the Islamic Republic and the Republic was confident that I was not defecting to the US. They were seriously following up my abduction. This mutual trust became stronger and stronger."
6. High-angle view of interview
7. SOUNDBITE: (Farsi) Shahram Amiri, Iranian nuclear scientist allegedly abducted and freed by the US:
"Their scenario, on which they insisted a lot, was that I should be interviewed by an American news agency and that I should say that I have defected to America of my own will and during the defection process, I have moved these evidences and documents (nuclear documents Amiri claims was shown to by the US illustrating Iran's plan to build atomic weapons) and verify the originality of these documents and testify that they belong to the Islamic Republic of Iran."
8. Reverse shot of Amiri at interview
9. SOUNDBITE: (Farsi) Shahram Amiri, Iranian nuclear scientist allegedly abducted and freed by the US:
"My information about and familiarity with the Iranian nuclear sites is perhaps less than that of an ordinary person."
An Iranian scientist who returned to his homeland to a hero's welcome after claiming he was abducted by US agents said on Saturday that US officials offered to swap him for three Americans hikers detained in Iran for straying into Iranian borders, that Iran accused of being spies.
Shahram Amiri who claimed he was abducted by the CIA (Central Intelligence Agency) in Saudi Arabia 14 months ago and returned to Iran on Wednesday denied defection charges.
"I totally trusted the Islamic Republic and the Republic was confident that I was not defecting to the US," he said during an interview with state broadcaster IRIB in Tehran.
Amiri said that the Americans had presented him with fake nuclear documents and had asked him to publicly claim that he had brought them to the US from Iran.
US officials have countered aggressively, calling Amiri's story a "fairy tale" and said the scientist was paid 5 (m) million US dollars to provide the CIA with information about its suspected nuclear weapons programme.
Amiri is at the centre of a volatile war of words between Iran and the US, with each country trading public salvos designed to discredit the other.
The Washington Post reported on its website late on Friday that Amiri for some time had been providing the CIA with information about Iran's nuclear programme while he was still in Iran.
The report said he was one of two informants the agency whisked out of the country last year because of concerns that the Tehran government had discovered they were providing secrets.
Amiri was among a half dozen people working inside the Iranian nuclear programme that subsequently were settled in the United States and given "reward packages" of money, the newspaper said, quoting anonymous US officials.
For the moment, the Iranian scientist is a national hero, but after his public role is done, former CIA officials say, he will likely face intense questioning about his defection from Iran's Ministry of Intelligence and Security and a future etched in fear.
His short career as a defector and informant for the US also will expose him to pressure from Iranian officials for information about his American handlers - and to even more perilous questions about his loyalty, they claim.
"They will keep him in fear and in doubt as to what his eventual fate will be," said Paul Pillar, a former CIA analyst with extensive knowledge of Iran.
On Thursday, Amiri took part in a high-profile news conference in Tehran and stuck to his tale that he was kidnapped by the CIA in Saudi Arabia and whisked to Arizona and held against his will.
US officials refuted Amiri's claims, releasing glints of revealing information intended to chip away at Amiri's credibility.
They have said Amiri, who ran a radiation detection programme in Iran, provided the CIA with significant information and had stayed here for months of his own free will.
All of this will make it harder for Amiri to convince Iranian intelligence officials of his claims that he was the victim of a forced rendition - the intelligence phrasing for a stealthy abduction.
How did he manage to escape from the CIA and make a series of videos questioning his treatment, and then make his way to the Pakistan Embassy in Washington, former US officials said, if he was being held captive?
Why would the US allow him to get on a commercial flight back to Iran if the CIA didn't want him to leave?
"It's unlikely that the Iranians believe his current cover story about being kidnapped," Pillar said.
Even Iran's foreign minister reportedly told the BBC somewhat sceptically that "we first have to see what has happened in these two years and then we will determine if he's a hero or not."
Eventually, former CIA officials said, Amiri's value in the propaganda war will wane and he will then face hard questions while under some form of house arrest.
Amiri won't have a lot of room to manoeuvre because his wife and young son are in Iran, a leverage point US officials say that the Iranians used to lure him back home.