To understand why dictators fall, it helps to recognise factors that produce a perfect anti-dictatorial storm. Barring missteps such as those that led to Gaddafi's undoing, a dictator's survival can be at risk because of newness in office, poor health, or old age combined with economic trouble.

I call on the Iranian people: it is not too late to replace the corrupt regime and return to your glorious Persian heritage a heritage of culture and values and not of bombs and missiles... How can a nation allow a regime to instill fear take away the people's freedom and shock the young generation that seeks its way out of the dictatorial Iran.