"Durability of order and continuation of the country's progress hinge on restoring public trust," Khatami, a popular reformist, said, according to the Web sites. "From the start, we said there is a legal way to regain that trust. I openly say now that the solution to get out of the current crisis is holding a referendum."
Under Iran's constitution, a referendum has to be ordered by Khamenei himself. All popular votes in Iran are monitored by an oversight body called the Guardian Council. Khatami, however, proposed that a neutral body, such as the Expediency Council, should monitor the proposed referendum instead.