Felix Diaz (C), leader of Argentina's Qom indigenous community, stands next to Nobel Peace laureate Adolfo Perez Esquivel (R) during the opening session of the 134th legislative term at the Congress in Buenos Aires, Argentina, March 1, 2016. REUTERS/Marcos Brindicci 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

An Iranian woman smiles as she speaks with a Reuters TV producer in Qom, 120 km (75 miles) south of Tehran February 28, 2012. Picture taken February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: HEADSHOT SOCIETY) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.
Iranian women attend an election campaign in Qom, 120km (75 miles) south of Tehran February 28, 2012. Picture taken on February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: POLITICS ELECTIONS) 

Iranian youth attend an election campaign in Qom, 120km (75 miles) south of Tehran February 28, 2012. Picture taken on February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: POLITICS ELECTIONS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

An elderly cleric tries to stand at a sidewalk in Qom, 120 km (75 miles) south of Tehran, February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: SOCIETY RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A cleric walks on a sidewalk in Qom, 120 km (75 miles) south of Tehran, February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: SOCIETY RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A woman walks past electoral posters in Qom, 120 km (75 miles) south of Tehran, February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: POLITICS ELECTIONS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A cleric and a woman walk past a mural of Iran's Supreme Leader Ayatollah Ali Khamenei in Qom, 120 km (75 miles) south of Tehran, February 28, 2012. The Persian script reads: "The martyrs of Islamic revolution saved the reputation of Islam and Koran with their blood". REUTERS/Raheb Homavandi (IRAN - Tags: POLITICS RELIGION TPX IMAGES OF THE DAY) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

Students attend a campaign event by Parliament speaker and candidate for Iran's upcoming parliamentary election Ali Larijani in Qom, 120 km (75 miles) south of Tehran, February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: POLITICS ELECTIONS EDUCATION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A cleric stands beside electoral posters for Iran's upcoming parliamentary election in Qom, 120 km (75 miles) south of Tehran, February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: POLITICS ELECTIONS RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A man works inside the campaign headquarter of a candidate for Iran's upcoming parliamentary election in Qom, 120 km (75 miles) south of Tehran, February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: POLITICS ELECTIONS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A cleric looks at election leaflets inside the campaign headquarter of Parliament speaker and candidate for Iran's upcoming parliamentary election Ali Larijani in Qom, 120 km (75 miles) south of Tehran, February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: POLITICS ELECTIONS RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A cleric looks at electoral posters in Qom, 120 km (75 miles) south of Tehran, February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: POLITICS ELECTIONS RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A man hands out election leaflets in Qom, 120 km (75 miles) south of Tehran, February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: POLITICS ELECTIONS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

Women sit under electoral posters at a bus station in Qom, 120 km (75 miles) south of Tehran, February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: POLITICS ELECTIONS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A woman walks past an electoral banner for Iran's upcoming parliamentary election in Qom, 120 km (75 miles) south of Tehran, February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: POLITICS ELECTIONS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A cleric walks past an electoral banner for Iran's upcoming parliamentary election in Qom, 120 km (75 miles) south of Tehran, February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: POLITICS ELECTIONS RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

Parliament speaker and candidate for Iran's upcoming parliamentary election Ali Larijani addresses students as part of his campaign ahead of the country's March 2 parliamentary election in Qom, 120 km (75 miles) south of Tehran, February 28, 2012. REUTERS/Raheb Homavandi (IRAN - Tags: POLITICS ELECTIONS HEADSHOT) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

A cleric walks along a street near a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

A handmade carpet waits for repair at a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

A worker picks a silk at a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

A designer works on a design for a carpet at a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

A worker works on a carpet at a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

Dyed silks are stocked at a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

A worker works at a loom at a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

Dyed silks are hung out to dry on the rooftop of a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

An artist draws a design for a carpet at a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

A worker checks dyed silks at a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

A worker dyes silks at a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

A view shows the hand of a worker at a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

A worker repairs a handmade carpet at a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

A worker hangs dyed silks on the rooftop of a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

A worker adjusts a loom at a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS TPX IMAGES OF THE DAY) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

A worker sits in front of a loom at a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS TPX IMAGES OF THE DAY) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.

Two workers dye silks at a carpet workshop in Qom, 120 km (75 miles) south of Tehran November 12, 2011. Persian carpet weaving is a historical part of Iranian culture, dating back to as far as approximately 2,000 years ago. Persian carpets can be mostly divided into three size groups: large (3x4 metres), medium (2x3 metres) and small (1x1.5 metres), which is called Ghaliche. For a larger 24-square-metre silk carpet, each 70 cm section takes about a month to make. The price for each carpet is set by officials from Iran?s national carpet company after examining each completed carpet. The carpet workshops are mostly family-run businesses. REUTERS/Morteza Nikoubazl (IRAN - Tags: SOCIETY BUSINESS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A cleric holds prayer-beads as he sits at a conference hall in Qom, 120 km (75 miles) south of Tehran, March 10, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A participant walks at a conference hall as she attends a religious conference in Qom, 120 km (75 miles) south of Tehran, March 10, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

An Iranian girl looks on as she sits next to his father who is a cleric, at a conference hall in Qom, 120 km (75 miles) south of Tehran, March 10, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

Clerics attend a religious conference in Qom, 120 km (75 miles) south of Tehran, March 10, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A cleric stands in front of a banner as he arrives at a religious conference centre in Qom, 120 km (75 miles) south of Tehran, March 10, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A cleric talks on his mobile phone as he arrives at a religious conference centre in Qom, 120 km (75 miles) south of Tehran, March 10, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

American Distinguished Professor of the Department of Philosophy of the University of Massachusetts, Lynne Rudder Baker, smiles as she attends a religious conference in Qom, 120 km (75 miles) south of Tehran, March 10, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

Clerics stand at a lift at a religious conference centre in Qom, 120 km (75 miles) south of Tehran, March 10, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

Two Iranian clerics talk to each other while attending a religious conference in Qom, 120 km (75 miles) south of Tehran, March 10, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

An Iranian cleric looks on as he sits at a religious conference hall in Qom, 120 km (75 miles) south of Tehran, March 10, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

An Iranian cleric rests as he sits at a religious conference hall in Qom, 120 km (75 miles) south of Tehran, March 10, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

An Iranian participant adjusts her scarf at a religious conference hall in Qom, 120 km (75 miles) south of Tehran, March 10, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

Iranian clerics sit at a religious conference hall in Qom, 120 km (75 miles) south of Tehran, March 9, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

Iranian clerics talk to each other during break time as they stand outside a religious conference centre in Qom, 120 km (75 miles) south of Tehran, March 9, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION SOCIETY) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

An Iranian cleric uses his phone during break time at a religious conference centre in Qom, 120 km (75 miles) south of Tehran, March 9, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION SOCIETY) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A cleric walks at the Hojjatieh seminary in the holy city of Qom, 120 km (75 miles) south of Tehran, March 9, 2011. REUTERS/Morteza Nikoubazl (IRAN - Tags: EDUCATION RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

An Iranian cleric and a man talk to each other as they arrive at a religious conference centre in Qom, 120 km (75 miles) south of Tehran, March 9, 2011. They are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION SOCIETY) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

Iranian clerics sit at a religious conference hall in Qom, 120 km (75 miles) south of Tehran, March 9, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A cleric walks past an Iranian flag as he arrives at a religious conference centre in Qom, 120 km (75 miles) south of Tehran, March 9, 2011. The cleric is attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION SOCIETY) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A view of Hojjatieh seminary (bottom) and the holy shrine of Hazrat Ma'soumeh (top), the sister of the seventh shi'ite Muslim Imam Reza, in the holy city of Qom, 120 Km (75 miles) south of Tehran, March 9, 2011. REUTERS/Morteza Nikoubazl (IRAN - Tags: CITYSCAPE RELIGION) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

Philosopher Muhammad Legenhausen (bottom C) from the U.S. speaks with Iranian mid-ranking cleric Ahmad Vaezi during the International Conference of Religious Doctrines and the Mind-Body Problem in Qom, 120 km (75 miles) south of Tehran, March 9, 2011. Gary Carl Legenhausen who converted to Islam in 1983 and chose Muhammad as his Islamic name, teaches at the Imam Khomeini Education and Research Institute, which is directed by the Iranian Senior Ayatollah Mohammad Taqi Mesbah-Yazdi in the holy city of Qom. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION SOCIETY) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

Iranian clerics talk to each other during break time at a religious conference centre in Qom, 120 km (75 miles) south of Tehran, March 9, 2011. The clerics are attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION SOCIETY) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

An Iranian cleric is reflected in the side mirror of a vehicle as he arrives at a religious conference centre in Qom, 120 km (75 miles) south of Tehran, March 9, 2011. The cleric is attending the International Conference of Religious Doctrines and the Mind-Body Problem. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION SOCIETY) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

Men carry a symbolic coffin covered with representations of the U.S. and Israeli flags and a cartoon of U.S. President Barack Obama during a rally to mark the 32nd anniversary of the Islamic Revolution in Qom, 120 km (75 miles) south of Tehran, February 11, 2011. Hundreds of thousands turned out on Friday to mark the 32nd anniversary of Iran's Islamic Revolution in a rally the clerical establishment billed as a chance to show solidarity with "Islamic" protesters in Egypt. REUTERS/Morteza Nikoubazl (IRAN - Tags: ANNIVERSARY POLITICS) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

Men carry a symbolic coffin covered with representations of the U.S. and Israeli flags and a cartoon of U.S. President Barack Obama as a banner with a picture of Iran's Supreme Leader Ayatollah Ali Khamenei (L) and late Leader Ayatollah Ruhollah Khomeini (2nd L) is seen overhead, during a rally to mark the 32nd anniversary of the Islamic Revolution in Qom, 120 km (75 miles) south of Tehran, February 11, 2011. Hundreds of thousands turned out on Friday to mark the 32nd anniversary of Iran's Islamic Revolution in a rally the clerical establishment billed as a chance to show solidarity with "Islamic" protesters in Egypt. REUTERS/Morteza Nikoubazl (IRAN - Tags: ANNIVERSARY POLITICS)