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Millions of Iranians demanded a re-run of the presidential election at mass protests
US President Barack Obama has ordered for the first time sanctions against senior Iranian officials for "sustained and severe violations of human rights".
The eight men include the head of the Revolutionary Guards, a former interior minister and the prosecutor-general.
The treasury department said they would face a travel ban and asset freeze.
The alleged abuses include the killings and beatings of anti-government protesters after the disputed presidential election in June 2009.
Millions of Iranians defied official warnings and participated in mass rallies that drew the largest crowds since the Islamic Revolution in 1979.
The authorities launched a brutal crackdown, during which opposition and human rights groups accused the security forces of extra-judicial killings, rapes and torture. Thousands were held without charge.
Over the subsequent six months, at least 40 protesters were killed, although the opposition says more than 70 died. At least two people have been executed for related offences, and dozens imprisoned.
In a statement, the White House said: "As the president noted in his recent address to the United Nations General Assembly, human rights are a matter of moral and pragmatic necessity for the United States."
"The United States will always stand with those in Iran who aspire to have their voices heard. We will be a voice for those aspirations that are universal, and we continue to call upon the Iranian government to respect the rights of its people."
All of those named in the US sanctions list served in Iran's military, law enforcement and justice system around the time of the 2009 protests:
Mohammad Ali Jafari, the commander of the Islamic Revolution Guard Corps (IRGC)Sadeq Mahsouli, the current minister of welfare and security, and former minister of the interiorQolam-Hossein Mohseni-Ejei, the current prosecutor-general of Iran and former intelligence ministerSaeed Mortazavi, the former prosecutor-general of TehranHeydar Moslehi, the minister of IntelligenceMostafa Mohammad Najjar, the current interior minister and former deputy commander of the armed forces for law enforcementAhmad-Reza Radan, deputy chief of Iran's National PoliceHossein Taeb, current deputy commander for Intelligence for the IRGC and former commander of the IRGC's Basij militiaAny assets in the US held by the eight Iranians will be frozen, and US citizens and companies will be prohibited from doing business with them.
At a news conference in Washington, Secretary of State Hillary Clinton said it was the first time the US has imposed sanctions against Iran for human rights abuses.
"We would like to be able to tell you that it might be the last but we fear not," she said.
"We now have at our disposal a new tool that allows us to designate individual Iranians officials responsible for or complicit in serious human rights violations and do so in a way that does not in any way impact on the well-being of the Iranian people themselves."
This article is from the BBC News website. ? British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

Millions of Iranians demanded a re-run of the presidential election at mass protests US President Barack Obama has ordered for the first time sanctions against senior Iranian officials for "sustained and severe violations of human rights".
The eight men include the head of the Revolutionary Guards, a former interior minister and the prosecutor-general.
The treasury department said they would face a travel ban and asset freeze.
The alleged abuses include the killings and beatings of anti-government protesters after the disputed presidential election in June 2009.
“The United States will always stand with those in Iran who aspire to have their voices heard. We will be a voice for those aspirations that are universal”
Q&A: Iran protestsThe authorities launched a brutal crackdown, during which opposition and human rights groups accused the security forces of extra-judicial killings, rapes and torture. Thousands were held without charge.
Over the subsequent six months, at least 40 protesters were killed, although the opposition says more than 70 died. At least two people have been executed for related offences, and dozens imprisoned.
In a statement, the White House said: "As the president noted in his recent address to the United Nations General Assembly, human rights are a matter of moral and pragmatic necessity for the United States."
"The United States will always stand with those in Iran who aspire to have their voices heard. We will be a voice for those aspirations that are universal, and we continue to call upon the Iranian government to respect the rights of its people."
All of those named in the US sanctions list served in Iran's military, law enforcement and justice system around the time of the 2009 protests:
Mohammad Ali Jafari, the commander of the Islamic Revolution Guard Corps (IRGC)Sadeq Mahsouli, the current minister of welfare and security, and former minister of the interiorQolam-Hossein Mohseni-Ejei, the current prosecutor-general of Iran and former intelligence ministerSaeed Mortazavi, the former prosecutor-general of TehranHeydar Moslehi, the minister of IntelligenceMostafa Mohammad Najjar, the current interior minister and former deputy commander of the armed forces for law enforcementAhmad-Reza Radan, deputy chief of Iran's National PoliceHossein Taeb, current deputy commander for Intelligence for the IRGC and former commander of the IRGC's Basij militiaAny assets in the US held by the eight Iranians will be frozen, and US citizens and companies will be prohibited from doing business with them.
At a news conference in Washington, Secretary of State Hillary Clinton said it was the first time the US has imposed sanctions against Iran for human rights abuses.
"We would like to be able to tell you that it might be the last but we fear not," she said.
"We now have at our disposal a new tool that allows us to designate individual Iranians officials responsible for or complicit in serious human rights violations and do so in a way that does not in any way impact on the well-being of the Iranian people themselves."
This article is from the BBC News website. ? British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

