More than a thousand years before modern nations established cloak and dagger intelligence agencies, the art of political assassination was perfected in West Asia. The architect of this art was Hassan al Sabbah, a shadowy character shrouded in exotic mystery about whom as much information has come down to us as misinformation. The Seljuks tilted the internal balance of power within the Islamic...

History is not created with a big bang. It moves in subtle, almost imperceptible steps in which all men and women participate. It is an edifice on which the action of every human, no matter how humble, has left its imprint. Great events do occur, but they merely mark the milestones in the continuing unfolding of history. In recreating the critical moments in Islamic history that have molded...