While I think this is a good development, we also shouldn't be naive as to why this is happening. Certainly part of it is disagreement w/Ahmadinejad's policies. But some of this credit goes to the US government which has been funding opposition, including student groups, for quite some time. (see FUNDING below)
While there are details on US funding below, the person in charge, uptil recently, for US intervention and media in Iran was none other than Dick Cheney's daughter.
"After three years of working at the State Department, in spring 2006 Elizabeth Cheney left her post in order to have her fifth child. In February 2005, Cheney, daughter of Vice President Dick Cheney, had been appointed principal deputy assistant secretary of state for Near Eastern Affairs, making her the No. 2 official in the State Department's Bureau of Near Eastern Affairs. The post reportedly entails actively working to develop regime-change strategies for Middle Eastern countries, mainly Syria and Iran. According to unnamed colleagues interviewed by the newspaper the Australian, she was referred to in the department as the “freedom agenda coordinator” and the “democracy tsar” (March 6, 2006)."
Read more about her handiwork here:
http://rightweb.irc-online.org/profile/3376FUNDING
Here's part of a speech by Nicholas Burns, Under-Secretary of State
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In November 2003 at the National Endowment for Democracy, President Bush outlined a forward strategy for freedom in the Middle East. He said that “sixty years of Western nations excusing and accommodating the lack of freedom in the Middle East did nothing to make us safe -- because in the long run, stability cannot be purchased at the expense of liberty.” In his 2005 Inaugural Address, the President reiterated America’s support for the people of the broader Middle East and North Africa in their fight for freedom. “We will persistently clarify the choice before every ruler in every nation: The moral choice between oppression, which is always wrong, and freedom, which is eternally right.” President Bush spoke directly to the Iranian people in his February 2, 2005, State of the Union Address, saying: “As you stand for your own liberty, America stands with you.”
The Administration is deeply appreciative of Congress’ and this Committee’s support for the resources that enable us to implement the President’s Freedom agenda and reach out to the Iranian people. A few examples:
-- Since May 2003 we have funded a Persian language website that serves as a “virtual embassy” by providing the only channel for both U.S. policy statements in Persian as well as a range of information about democracy, American society and values, and consular information.
-- We are also funding political discussion in Persian on television and radio broadcasts into Iran under the auspices of the Voice of America. Recently VOA announced that it was increasing the duration of these broadcasts. The U.S. government also funds news and music broadcasts into Iran on Radio Farda. This service is specifically targeted at the large population of younger people in Iran.
-- The FY2005 Foreign Operations, Export Financing, and Related Programs Appropriations Act doubled to three million dollars the funds available to our Democracy, Human Rights and Labor Bureau to support the advancement of human rights and democracy in Iran. We are currently reviewing applications for FY2005; in 2004 we provided one million dollars to document human rights abuses inside Iran and $500,000 for National Endowment for Democracy programming.
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Best I know our media expenditures are not limited to media which has the "United States" label stamped to it.