One of "Foreign Policy"'s Best Five Books of 2013, chosen by MarcLynch of The Middle East Channel Beginning with the 2003 invasion of Iraq and concluding with the aftermath of the 2011 Arab uprisings, Frederic M. Wehrey investigates the roots of the Shi?a-Sunni divide now dominating the Persian Gulf's political landscape. Focusing on three Gulf states affected most by sectarian tensions--Bahrain, Saudi Arabia, and Kuwait--Wehrey identifies...