Via Cliff May, this gem of analysis from Time Magazine in 1979. I only post this to make the point that we don't really know much about what will happen in the future, because it hasn't happened yet. This is Time discussing Ayatollah Khomeini's plans, shortly after he arrived back in Iran:

Those who know the Ayatullah expect that eventually he will settle in the Shi'ite holy city of Qum and resume a life of teaching and prayer. It seems improbable that he would try to become a kind of Archbishop Makarios of Iran, directly holding the reins of power. Khomeini believes that Iran should become a parliamentary democracy, with several political parties. But he is unlikely to withdraw to shadows and silence until Iran adopts a new constitution and the threat of civil war is removed.