The shah had previously fled Iran after Mossadegh and his supporters challenged Pahlavi's control.

CNN: Why Iran unrest is not revolution re-run

The widow of the late Shah of Iran, Farah Pahlavi, also will attend, her office said Thursday.

CNN: Reagan state funeral prepared

In 1980, Mohammed Reza Pahlavi died of cancer while in exile in Egypt.

CNN: Monday,

Pahlavi has lived in exile since 1979, when his father, Mohammad Reza Shah Pahlavi, was overthrown during the Islamic Revolution.

CNN: Fighting tears, shah's son calls crisis a 'moment of truth'

But to see Reza Pahlavi as simply a restorationist underestimates his appeal.

CENTERFORSECURITYPOLICY: What to Do About Iran

When Shah Mohammed Reza Pahlavi of Iran left power in 1979, he was already suffering from advanced lymphatic cancer which killed him in 1980.

FORBES: What Will Become Of Hosni Mubarak's Health?

Citing anecdotes from people inside the Iranian establishment, Pahlavi said he had heard that security forces have begun to distance themselves from the regime.

CNN: Fighting tears, shah's son calls crisis a 'moment of truth'

Ideologically, Pahlavi has made his message as broad as possible, focusing on the major point on which most exile opposition groups agree: a new secular constitution.

CENTERFORSECURITYPOLICY: What to Do About Iran

Pahlavi spent an hour fielding calls from Iran.

CENTERFORSECURITYPOLICY: What to Do About Iran

After World War II, according to the book, the younger Schwarzkopf traveled to Iran to be with his father, who was helping advise the training of the country's police force under the shah, Mohammad Reza Pahlavi.

CNN: STORY HIGHLIGHTS