Their main enemy IS Iran.
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I would not bet my life on that...even if appearances might leave that impression...both Iran and SA have a common enemy -- DEMOCRACY.
Its not a matter of appearances, its a matter of fact-with the exception of the U.S. in Iraq, Iran is the dominant military power in the Gulf, and the Gulf Arabs are worried about Iran's bid for regional supremacy. And democracy is not the Saudis' enemy because we aren't going to try to overturn the Saudi monarchy any time soon (until we limit our dependence on their oil). The internal elements opposing the Saudi regime are primarily Islamists and are not really interested in democracy either. SA is one of our biggest long-term foreign policy problems.
at least Iran is not two faced about it.....you never ever know who's side SA is on.....plus they and their Maddrasis (SP?) are the real long term problem