The son of the late shah hailed Iran's mass protests as a landmark revolution by women and urged the world to add to the pressure on the clerical leadership.
Reza Pahlavi, whose father was toppled in the Islamic Revolution of 1979, called for greater preparation for a future Iranian system that is secular and democratic.
"It is truly in modern times, in my opinion, the first revolution for the women, by the women -- with the support of the Iranian men, sons, brothers and fathers," Pahlavi, who lives in exile in the Washington area, told AFP.
"It has come to the point, as the Spaniards would say, basta -- we've had enough."