'Contacting the enemy'
Speaking at a news conference on Monday, foreign ministry spokesman Hassan Qashqavi accused Western governments of explicitly backing violent protests aimed at undermining the stability of Iran's Islamic Republic.
"Spreading anarchy and vandalism by Western powers and also Western media... these are not at all accepted," he said.
How can they say they are unbiased when their TV channel is like a war headquarters?
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He said the West was acting in an "anti-democratic" manner, instead praising Iran's commitment to democracy and stressing once again that the results of the presidential election were unimpeachable.
Iran has strongly criticised the US and UK governments in recent days, and Mr Qashqavi reserved special scorn for the BBC and for the Voice of America network, which he called "government channels".
The BBC and other foreign media have been reporting from Iran under severe restrictions for the past week. The BBC's permanent correspondent in Iran, Jon Leyne, was asked to leave the country on Sunday.
"They [the BBC and the VOA] are the mouthpiece of their government's public diplomacy," Mr Qashqavi said.
"They have two guidelines regarding Iran. One is to intensify ethnical and racial rifts within Iran and secondly to disintegrate the Iranian territories."
"Any contact with these channels, under any pretext or in any form, means contacting the enemy of the Iranian nation.
"How can they say they are unbiased when their TV channel is like a war headquarters and in fact they are blatantly commanding riots. Therefore their claims are absolutely wrong. Their governments have ratified decisions so that they can act in this way."