Perhaps because he doesn't want to give validity to the Mullahs charge that Americans are running the show.
Anyway, I think it's interesting the protests started a month before their often pronounced date. Might have caught the Mullahs off-guard.
G'nite.
Jeesh!! What does it take a personal interview? Dubya' has toppled a reshime in Iraq, freed Afghanistan, and is in the process of helping to rid Israel of terrorists. :)