Parisa Hafezi

In the complex political system of the Islamic Republic,

Major decisions are often made behind the scenes before any formal announcement.

He's young, in late 50s.

He has always worked behind the scenes.

He's one of the most influential people in the Islamic Republic.

Many argue that installing the supreme leader's son would resemble dynastic succession, something that runs against the revolutionary ideals that toppled the monarchy in 1979.

Mostaba's elevation could also fuel anger among Iranians who are already deeply frustrated with the political system and increasingly demand fundamental change.