A former US national security adviser has told Al Jazeera that US intelligence agents are working in Iran.<br /><br />But Brent Scowcroft said US government support for those in Iran who are protesting against the official results of a recent presidential election would only provoke a more intense crackdown by the government in Tehran.<br /><br />He told Josh Rushing, the host of Al Jazeera's programme Fault Lines, that the Obama administration has taken the correct approach in dealing with the unrest in Iran.
