Iran's International Atomic Energy Agency IAEA ambassador Ali Asghar Soltanieh (R) is welcomed by IAEA chief weapons inspector Olli Heinonen as they attend a board of governors meeting at the UN headquarters in Vienna February 12, 2010. Ali Akbar Salehi, the head of Iran's Atomic Energy Organisation talked about the Islamic Republic's decision to start producing higher-grade enriched uranium this week and other issues in an interview with Reuters on Thursday. REUTERS/Herwig Prammer (AUSTRIA - Tags: POLITICS ENERGY) 

Anil Kakodkar (L), chairman of the Atomic Energy Commission of India, and International Atomic Energy Agency (IAEA) chief weapons inspector Olli Heinonen talk before a board of governors meeting in Vienna's U.N. headquarters August 1, 2008. Governors of the U.N. nuclear watchdog meet on Friday to consider India's draft plan for inspections of its civilian atomic reactors, a precondition for launching a deal to obtain U.S. nuclear fuel and technology. REUTERS/Herwig Prammer (AUSTRIA) 

Iranian President Mahmoud Ahmadinejad (2nd L) shakes hands with the IAEA deputy director Olli Heinonen as the International Atomic Energy Agency Director General Mohamed Elbaradei (L) and head of Iran's Atomic Energy Organization Gholamreza Aghazadeh attend an official meeting in Tehran January 12, 2008. REUTERS/Morteza Nikoubazl (IRAN) 

International Atomic Energy Agency (IAEA) Director General Mohamed ElBaradei (R) gestures next to IAEA chief weapons inspector Olli Heinonen before boarding a plane on their way to Iran at Vienna's international airport Schwechat January 10, 2008. ElBaradei will make a rare visit to Iran to try to push it into speeding up moves to defuse concerns about its nuclear programme. REUTERS/Herwig Prammer (AUSTRIA) 

International Atomic Energy Agency (IAEA) Director General Mohamed ElBaradei (L) and IAEA chief weapons inspector Olli Heinonen walk to board a plane en route to Iran at Vienna's international airport Schwechat January 10, 2008. ElBaradei will make a rare visit to Iran to try to push it into speeding up moves to defuse concerns about its nuclear programme. REUTERS/Herwig Prammer (AUSTRIA) 

Olli Heinonen, deputy director of the U.N. International Atomic Energy Agency (IAEA), speaks with Javad Vaeedi (L), Iran's deputy nuclear negotiator in Tehran October 29, 2007. A U.N. nuclear agency official described cooperation with Iran as "good" ahead of talks on Monday about Tehran's atomic work, after an Iranian warning that new U.S. sanctions could harm ties. REUTERS/Raheb Homavandi (IRAN) 

Olli Heinonen, deputy director of the U.N. International Atomic Energy Agency (IAEA), (2nd R) speaks with Iran's deputy nuclear negotiation team members in Tehran October 29, 2007. A U.N. nuclear agency official described cooperation with Iran as "good" ahead of talks on Monday about Tehran's atomic work, after an Iranian warning that new U.S. sanctions could harm ties. REUTERS/Raheb Homavandi (IRAN) 

Olli Heinonen, deputy director of the U.N. International Atomic Energy Agency (IAEA), speaks with Javad Vaeedi (L), Iran's deputy nuclear negotiator in Tehran October 29, 2007. A U.N. nuclear agency official described cooperation with Iran as "good" ahead of talks on Monday about Tehran's atomic work, after an Iranian warning that new U.S. sanctions could harm ties. REUTERS/Raheb Homavandi (IRAN) 

International Atomic Energy Agency (IAEA) chief weapons inspector Olli Heinonen (L) talks to IAEA Director General Mohamed ElBaradei at the beginning of a board of governors meeting in Vienna September 12, 2007. Non-aligned nations on Tuesday rejected "interference" in Iran's nuclear transparency deal with U.N. inspectors, countering Western criticism the pact eases pressure on Tehran not to seek technology with bomb potential. REUTERS/Herwig Prammer (AUSTRIA) 

International Atomic Energy Agency (IAEA) chief weapons inspector Olli Heinonen (L) talks to IAEA Director General Mohamed ElBaradei at the beginning of a board of governors meeting in Vienna September 12, 2007. Non-aligned nations on Tuesday rejected "interference" in Iran's nuclear transparency deal with U.N. inspectors, countering Western criticism the pact eases pressure on Tehran not to seek technology with bomb potential. REUTERS/Herwig Prammer (AUSTRIA) 

IAEA deputy director Olli Heinonen attends a joint media conference with Javad Vaeedi, Iran's deputy nuclear negotiator, in Tehran August 21, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

IAEA deputy director Olli Heinonen speaks with the media during a joint media conference with Javad Vaeedi, Iran's deputy nuclear negotiator, in Tehran August 21, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

Javad Vaeedi, Iran's deputy nuclear negotiator, speaks with the media during a joint media conference with IAEA deputy director Olli Heinonen in Tehran August 21, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

IAEA deputy director Olli Heinonen and Javad Vaeedi (R), Iran's deputy nuclear negotiator, speak with the media during a media conference in Tehran August 21, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

Javad Vaeedi, Iran's deputy nuclear negotiator, speaks with the media during a joint media conference with IAEA deputy director Olli Heinonen in Tehran August 21, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

IAEA deputy director Olli Heinonen writes a note during a joint media conference with Javad Vaeedi, Iran's deputy nuclear negotiator, in Tehran August 21, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

IAEA deputy director Olli Heinonen (L) and Javad Vaeedi, Iran's deputy nuclear negotiator, speak with the media during a media conference in Tehran August 21, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

IAEA deputy director Olli Heinonen speaks with the media during a joint media conference with Javad Vaeedi, Iran's deputy nuclear negotiator, in Tehran August 21, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

IAEA deputy director Olli Heinonen speaks with the media during a joint media conference with Javad Vaeedi, Iran's deputy nuclear negotiator, in Tehran August 21, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

IAEA deputy director Olli Heinonen (L) looks at Javad Vaeedi, Iran's deputy nuclear negotiator, during a media conference in Tehran August 21, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

IAEA deputy director Olli Heinonen (L) and Javad Vaeedi, Iran's deputy nuclear negotiator, speak with the media during a media conference in Tehran August 21, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

International Atomic Energy Agency Deputy Director Olli Heinonen (L) shakes hands with Javad Vaeedi, Iran's deputy nuclear negotiator, after a joint news conference in Tehran August 21, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

Javad Vaeedi, Iran's deputy nuclear negotiator, addresses the media during a news conference with International Atomic Energy Agency Deputy Director Olli Heinonen (not pictured) in Tehran August 21, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

International Atomic Energy Agency Deputy Director Olli Heinonen addresses the media during a news conference with Javad Vaeedi (not pictured), Iran's deputy nuclear negotiator, in Tehran August 21, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

International Atomic Energy Agency Deputy Director Olli Heinonen (L) and Javad Vaeedi, Iran's deputy nuclear negotiator, address a media conference in Tehran August 21, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

IAEA deputy director Olli Heinonen (C) speaks with Iranian officials Mohammad Saeedi, deputy of head of Iran's Atomic Energy Organisation, and Javad Vaeedi, Iran's sdeputy nuclear negotiator (not in picture), in Tehran August 20, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

Mohammad Saeedi, deputy of head of Iran's Atomic Energy Organisation, looks at documents during an official meeting with the IAEA deputy director Olli Heinonen (not in picture) in Tehran August 20, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

IAEA deputy director Olli Heinonen (2nd R) attends an official meeting with Iranian officials Mohammad Saeedi, deputy of head of Iran's Atomic Energy Organisation and Javad Vaeedi, Iran's deputy nuclear negotiator (not in icture), in Tehran August 20, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

Mohammad Saeedi (2nd L), deputy of head of Iran's Atomic Energy Organisation, smiles as he speaks with the IAEA deputy director Olli Heinonen (not in picture) during an official meeting in Tehran August 20, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

IAEA deputy director Olli Heinonen (top C) speaks with Iranian officials Mohammad Saeedi, deputy of head of Iran's Atomic Energy Organisation (bottom R) and Javad Vaeedi, Iran's deputy nuclear negotiator (bottom L), in Tehran August 20, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

IAEA deputy director Olli Heinonen smiles as he attends an official meeting with Iranian officials Mohammad Saeedi, deputy of head of Iran's Atomic Energy Organisation and Javad Vaeedi, Iran's deputy nuclear negotiator, in Tehran August 20, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

Iranian officials Mohammad Saeedi, deputy of head of Iran's Atomic Energy Organisation (L) and Javad Vaeedi, Iran's Deputy Nuclear negotiator, attend an official meeting with the IAEA deputy director Olli Heinonen in Tehran August 20, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

Iranian officials Mohammad Saeedi (L), deputy of head of Iran's Atomic Energy Organisation, and Javad Vaeedi, Iran's deputy nuclear negotiator, attend an official meeting with the IAEA deputy director Olli Heinonen in Tehran August 20, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

IAEA deputy director Olli Heinonen smiles as he attends an official meeting with Iranian officials Mohammad Saeedi, deputy of head of Iran's Atomic Energy Organisation and Javad Vaeedi, Iran's deputy nuclear negotiator, in Tehran August 20, 2007. REUTERS/Morteza Nikoubazl (IRAN) 

Iran's deputy nuclear negotiator Javad Vaidi (L) listens to International Atomic Energy Agency (IAEA) chief weapons inspector Olli Heinonen briefing the media at Vienna's United Nations headquarters July 24, 2007. Iran resumed talks with the U.N. nuclear watchdog on Tuesday on clarifying the scope of its atomic activities in what diplomats called an effort to head off more painful U.N. sanctions against Tehran. REUTERS/Herwig Prammer (AUSTRIA) 

Iran's deputy nuclear negotiator Javad Vaidi (L) smiles as he listens to International Atomic Energy Agency (IAEA) chief weapons inspector Olli Heinonen briefing the media at Vienna's United Nations headquarters July 24, 2007. Iran resumed talks with the U.N. nuclear watchdog on Tuesday on clarifying the scope of its atomic activities in what diplomats called an effort to head off more painful U.N. sanctions against Tehran. REUTERS/Herwig Prammer (AUSTRIA) 

The International Atomic Energy Agency (IAEA) deputy director Olli Heinonen speaks to journalists during a news conference in Tehran July 12, 2007. Two days of talks between Iran and the U.N. nuclear watchdog on an Iranian offer of more nuclear transparency made progress and will continue in the next few weeks, both sides said on Thursday. REUTERS/Raheb Homavandi (IRAN) 

Iran's deputy nuclear negotiator Javad Vaeedi (R) speks to the International Atomic Energy Agency (IAEA) deputy director Olli Heinonen during a news conference in Tehran July 12, 2007. Two days of talks between Iran and the U.N. nuclear watchdog on an Iranian offer of more nuclear transparency made progress and will continue in the next few weeks, both sides said on Thursday. REUTERS/Raheb Homavandi (IRAN) 

Iran's deputy nuclear negotiator Javad Vaeedi (L) and International Atomic Energy Agency (IAEA) deputy director Olli Heinonen walk under a picture of Iran's late leader Ayatollah Ruhollah Khomeini as they arrive at a news conference in Tehran July 12, 2007. Two days of talks between Iran and the U.N. nuclear watchdog on an Iranian offer of more nuclear transparency made progress and will continue in the next few weeks, both sides said on Thursday. REUTERS/Raheb Homavandi (IRAN) 

The International Atomic Energy Agency (IAEA) deputy director Olli Heinonen (R) and Iran's deputy nuclear negotiator Javad Vaeedi leave the conference in Tehran July 12, 2007. REUTERS/Raheb Homavandi (IRAN) 

The International Atomic Energy Agency (IAEA) deputy director Olli Heinonen speaks to journalists during a news conference in Tehran July 12, 2007. Two days of talks between Iran and the U.N. nuclear watchdog on an Iranian offer of more nuclear transparency made progress and will continue in the next few weeks, both sides said on Thursday. REUTERS/Raheb Homavandi (IRAN) 

International Atomic Energy Agency (IAEA) deputy director Olli Heinonen attends a news conference in Tehran July 12, 2007. Two days of talks between Iran and the U.N. nuclear watchdog on an Iranian offer of more nuclear transparency made progress and will continue in the next few weeks, both sides said on Thursday. REUTERS/Raheb Homavandi (IRAN) 

Iran's deputy nuclear negotiator Javad Vaeedi (R) speaks to journalists as International Atomic Energy Agency (IAEA) deputy director Olli Heinonen listens during a news conference in Tehran July 12, 2007. Two days of talks between Iran and the U.N. nuclear watchdog on an Iranian offer of more nuclear transparency made progress and will continue in the next few weeks, both sides said on Thursday. REUTERS/Raheb Homavandi (IRAN) 

International Atomic Energy Agency (IAEA) deputy director Olli Heinonen ( L) attends a news conference with Iran's deputy nuclear negotiator Javad Vaeedi in Tehran July 12, 2007. Two days of talks between Iran and the U.N. nuclear watchdog on an Iranian offer of more nuclear transparency made progress and will continue in the next few weeks, both sides said on Thursday. REUTERS/Raheb Homavandi (IRAN) 

International Atomic Energy Agency (IAEA) chief weapons inspector Olli Heinonen gestures at the beginning of a board of governors meeting in Vienna July 9, 2007. The International Atomic Energy Agency's governing body is expected on Monday to authorise the dispatch of U.N. monitors to North Korea to verify the shutdown of its atomic bomb programme, diplomats said. REUTERS/Herwig Prammer (AUSTRIA) 

International Atomic Energy Agency (IAEA) Nuclear Safeguards Director Olli Heinonen speaks to the media at a hotel in Beijing June 30, 2007, upon arrival from Pyongyang. The U.N. nuclear watchdog and North Korea have an understanding on how to monitor the shutdown and sealing of the North's nuclear reactor, but the closure date was up to the six-party talks, Heinonen said on Saturday. REUTERS/Jason Lee (CHINA) 

International Atomic Energy Agency (IAEA) Nuclear Safeguards Director Olli Heinonen speaks to the media at a hotel in Beijing June 30, 2007, upon arrival from Pyongyang. The U.N. nuclear watchdog and North Korea have an understanding on how to monitor the shutdown and sealing of the North's nuclear reactor, but the closure date was up to the six-party talks, Heinonen said on Saturday. REUTERS/Jason Lee (CHINA) 

International Atomic Energy Agency (IAEA) Nuclear Safeguards Director Olli Heinonen speaks to the media at a hotel in Beijing June 30, 2007, upon arrival from Pyongyang. The U.N. nuclear watchdog and North Korea have an understanding on how to monitor the shutdown and sealing of the North's nuclear reactor, but the closure date was up to the six-party talks, Heinonen said on Saturday. REUTERS/Jason Lee (CHINA) 

International Atomic Energy Agency (IAEA) Nuclear Safeguards Director Olli Heinonen speaks to the media at a hotel in Beijing June 30, 2007, upon arrival from Pyongyang. The U.N. nuclear watchdog and North Korea have an understanding on how to monitor the shutdown and sealing of the North's nuclear reactor, but the closure date was up to the six-party talks, Heinonen said on Saturday. REUTERS/Jason Lee (CHINA) 

Olli Heinonen, chief nuclear inspector for the International Atomic Energy Agency (IAEA), speaks to journalists at a hotel in Beijing June 26, 2007, before leaving for North Korea. The U.N. nuclear watchdog team prepared to leave for North Korea on Tuesday to negotiate terms for inspectors to confirm the shutdown of Pyongyang's nuclear reactor and source of bomb-grade plutonium. REUTERS/Alfred Cheng Jin (CHINA) 

Olli Heinonen, chief nuclear inspector for the International Atomic Energy Agency (IAEA), gestures to journalists at a hotel in Beijing June 26, 2007, before leaving for North Korea. The U.N. nuclear watchdog team prepared to leave for North Korea on Tuesday to negotiate terms for inspectors to confirm the shutdown of Pyongyang's nuclear reactor and source of bomb-grade plutonium. REUTERS/Alfred Cheng Jin (CHINA) 

Olli Heinonen, chief nuclear inspector for the International Atomic Energy Agency (IAEA), sits in a car in Beijing, June 26, 2007, before leaving for North Korea. The U.N. nuclear watchdog team prepared to leave for North Korea on Tuesday to negotiate terms for inspectors to confirm the shutdown of Pyongyang's nuclear reactor and source of bomb-grade plutonium. REUTERS/Alfred Cheng Jin (CHINA) 

Olli Heinonen, chief nuclear inspector for the International Atomic Energy Agency (IAEA), speaks to journalists at a hotel in Beijing June 26, 2007, before leaving for North Korea. The U.N. nuclear watchdog team prepared to leave for North Korea on Tuesday to negotiate terms for inspectors to confirm the shutdown of Pyongyang's nuclear reactor and source of bomb-grade plutonium. REUTERS/Alfred Cheng Jin (CHINA) 

Olli Heinonen, chief inspector of the U.N.'s nuclear watchdog, is chased by journalists upon his arrival at Beijing's airport June 25, 2007. The chief inspector of the U.N.'s nuclear watchdog arrived in China on Monday on his way to North Korea, where he hopes to arrange the return of an IAEA team to monitor Pyongyang's promised reactor shutdown. North Korea agreed in February to mothball its Yongbyon reactor, the centrepiece of its nuclear programme and source of weapons-grade plutonium. REUTERS/Claro Cortes IV (CHINA) 

Olli Heinonen, chief inspector of the U.N.'s nuclear watchdog, is surrounded by journalists upon his arrival at Beijing's airport June 25, 2007. The chief inspector of the U.N.'s nuclear watchdog arrived in China on Monday on his way to North Korea, where he hopes to arrange the return of an IAEA team to monitor Pyongyang's promised reactor shutdown. North Korea agreed in February to mothball its Yongbyon reactor, the centrepiece of its nuclear programme and source of weapons-grade plutonium. REUTERS/Claro Cortes IV (CHINA) 

Olli Heinonen, chief inspector of the U.N.'s nuclear watchdog, is surrounded by journalists upon his arrival at Beijing's airport June 25, 2007. The chief inspector of the U.N.'s nuclear watchdog arrived in China on Monday on his way to North Korea, where he hopes to arrange the return of an IAEA team to monitor Pyongyang's promised reactor shutdown. North Korea agreed in February to mothball its Yongbyon reactor, the centrepiece of its nuclear programme and source of weapons-grade plutonium. REUTERS/Claro Cortes IV (CHINA) 

Olli Heinonen, chief inspector of the U.N.'s nuclear watchdog, is surrounded by journalists upon his arrival at Beijing's airport June 25, 2007. The chief inspector of the U.N.'s nuclear watchdog arrived in China on Monday on his way to North Korea, where he hopes to arrange the return of an IAEA team to monitor Pyongyang's promised reactor shutdown. North Korea agreed in February to mothball its Yongbyon reactor, the centrepiece of its nuclear programme and source of weapons-grade plutonium. REUTERS/Claro Cortes IV (CHINA) 

International Atomic Energy Agency (IAEA) chief weapons inspector Olli Heinonen makes his way to check in at Vienna's international airport June 24, 2007. Heinonen set out for North Korea on Sunday to agree details on the return of IAEA inspectors which will monitor Pyonyang's promised atomic shutdown. REUTERS/Herwig Prammer (AUSTRIA) 

International Atomic Energy Agency (IAEA) chief weapons inspector Olli Heinonen briefs the media at Vienna's international airport June 24, 2007. Heinonen set out for North Korea on Sunday to agree details on the return of IAEA inspectors which will monitor Pyonyang's promised atomic shutdown. REUTERS/Herwig Prammer (AUSTRIA) 

International Atomic Energy Agency (IAEA) chief weapons inspector Olli Heinonen briefs the media at Vienna's international airport June 24, 2007. Heinonen set out for North Korea on Sunday to agree details on the return of IAEA inspectors which will monitor Pyonyang's promised atomic shutdown. REUTERS/Herwig Prammer (AUSTRIA)