By MICHAEL SLACKMAN
Published: July 20, 2009

CAIRO — As Iran’s political elite and clerical establishment splinter over the election crisis, the nation’s most powerful economic, social and political institution — the Islamic Revolutionary Guards Corps — has emerged as a driving force behind efforts to crush a still-defiant opposition movement.

From its origin 30 years ago as an ideologically driven militia force serving Islamic revolutionary leaders, the corps has grown to assume an increasingly assertive role in virtually every aspect of Iranian society.

And its aggressive drive to silence dissenting views has led many political analysts to describe the events surrounding the June 12 presidential election as a military coup.

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