The unprecedented brutal crackdown on recent protests in Iran suggests Tehran's rulers are no longer attempting to govern a discontented society but are in open conflict with it.

Iran's foreign minister said the country was prepared to show no restraint in retaliating to any military attack and mocked Europe about its standoff with the United States over President Donald Trump's push to control Greenland.

The thank-you note from US President Donald Trump to Iran’s leadership for halting what he described as planned mass executions reveals much about his politics, but more about the rulers in Tehran who have canonised deception as a political instrument.

Iran is ramping up its control of domestic cyberspace with a closed new state-run intranet, according to a US-based advocacy group, after a nationwide internet blackout cloaked the deadliest crackdown on protests in nearly half a century.

After returning from Iran to Canada, Mona Bolouri said the unity and size of protests she witnessed firsthand convinced her that the Islamic Republic was doomed after she left the country a day before a deadly crackdown.