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More demonstrations in support of Mir Hossein Mousavi are set in Iran for Wednesday—who, exactly, is this man millions of Iranians are supporting? Though he is the “reformist” option, Mousavi was a social conservative as prime minister in the 1980s, supports the clerical system, and was an early proponent of Iran’s nuclear program. President Obama recognizes this, saying on Tuesday that "Although there is amazing ferment taking place in Iran, the difference in actual policies between [Iranian President Mahmoud] Ahmadinejad and Mousavi in terms of their actual policies may not be as great as advertised.” Meanwhile, The Daily Beast’s Reza Alsan told CNN Tuesday night that Iran’s Assembly of Experts—86 clerics who have the power to remove Khamenei from power—gathered last night to discuss what to do about Khamenei.