"An engrossing, entertaining, evocative, and unexpectedly cinematic story, a pleasure to read in that specific way where it’s impossible not to imagine the movie or ten-episode series in your head as you go. For both the facts of the story and Aslan’s unique ability to merge literary flourish with accessible scholarship and historical deep-dives, it’s a page-turner the likes of which are rarely produced in the historical biography genre. For its filling of a major gap in the library of geopolitical history, its resonance with the present-day strife in Iran, its echoes of other historical political battlelines in the region, and its celebration of how sincere faith of any denomination can inform a more noble and humanistic view of international relations, it’s required reading."