Five decades ago, Ayatollah Ruhollah Khomeini became the voice of revolutionary fervour, spurring on demonstrators - even those who wanted a secular system to prevail in Iran. Khomeini's recorded speeches smuggled in on cassette tapes from his exile abroad stoked opposition to Pahlavi's father.

With demonstrations in dozens of cities across Iran, Ali Khamenei and his regime are faced with a dilemma.

Mohammad Reza Pahlavi, who served as the shah of Iran from 1941 to 1979, urged people to look at the country during and after his leadership when he was asked about how Iranians will judge him 50 years later during an interview.

Major Iranian cities were gripped overnight by new mass rallies denouncing the Islamic republic, as the son of the ousted shah urged protesters on Saturday to plan to seize city centres.

BBC News Persian profiles the former crown prince who is once again seeking a role in shaping his country's future.

The US-based son of Iran`s ousted shah urged Iranian government workers and security forces on Sunday to join the

Shah Jahan commissioned the Peacock Throne in 1628, completed after seven years of craftsmanship at a cost of Rs 1 crore, double of that of the Taj Mahal

Nearly 50 years after the 1979 Islamic Revolution overthrew his father, Crown Prince Reza Pahlavi has spurred demonstrators onto the streets.