One of America’s leading commentators on current events in the Middle East, Iranian-born scholar Vali Nasr brilliantly dissects the political and theological antagonisms within Islam in this “smart, clear and timely” book (The Washington Post). Still essential and timely ten years after its original publication, The Shia Revival provides an objective understanding of the 1,400-year struggle between Shias and Sunnis and sheds light on its modern-day consequences. A new epilogue elucidates the rise of ISIS and on-going tensions between Iran and Saudi Arabia.