The Iranian regime is not in power because it enjoys popular support. It does not. It's in power because it has a dedicated minority, which is probably more than 10% of the population, who are prepared to kill the others in order to keep God's government in place. As long as that continues to be the case, as long as there continues to be a minority--a pretty sizable minority--that is prepared to kill the rest of the population in order to keep God's government in place, it's going to be hard to make a Velvet Revolution.
On April 23rd, 2009. See this statement in context.