If you’re feeling hopeful that somehow the unrest in Iran could lead to a regime more friendly to the USA, it might be better to shelve your expectations to avoid disappointment.
As Claudia Rosett says, “Think of it as the New York mob being protested by the New Jersey mob.”
The “loser” in the election, Mousavi, is a big supporter of Iranian nukes, and no friend of the west.
The revolution that would matter in Iran would be if the ayatollahs were dethroned. Everything else is noise in the system, and a giant game of where’s Waldo.