A day after political violence swept across Iran, authorities have announced a major crackdown on opposition leaders.
Large-scale political violence has returned to the streets of Tehran, but foreign media have been banned by the Iranian government from covering the protests.
Post-election protests are now in their sixth month, and demonstrators are now frequently attacking Basiji security forces.
For more on the situation in Iran, Martin Savidge interviews Ervand Abrahamian, an Iranian-American who is a distinguished professor of history at the City University of New York.
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And Rosalind Jordan of Al Jazeera English reports on the latest developments
Should the Obama administration do something to encourage the opposition movement in Iran?
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