The country’s ruling theocracy remains under pressure from the US president as well as ongoing anger over a bloody crackdown.

Iran marks the 47th anniversary of its 1979 Islamic Revolution as leaders face pressure from the U.S. and anger at home.

This year's anniversary of the 1979 Islamic Revolution in Iran hides a deep pain after thousands of protestors were killed by regime forces. The BBC has been speaking to people on the streets of Tehran about the current situation and we'll hear what's going on with the talks between Iran and the United States.

Iran is no stranger to such unrest. In 1979, similar circumstances led to the Iranian revolution. However, Iranians soon became disappointed that the revolution did not deliver what they had been promised. So while the ideology of the revolution collapsed, the regime remains in place.

Some residents of the Iranian capital Tehran on Tuesday chanted slogans against the Islamic republic and supreme leader Ayatollah Ali Khamenei on the eve of the most significant annual commemoration

The BBC visits the Iranian capital for the first time since authorities used unprecedented force to put down protests last month.