Toby Matthiesen is a research fellow in Islamic and Middle Eastern Studies at Pembroke College, University of Cambridge. His first book “Sectarian Gulf: Bahrain, Saudi Arabia, and the Arab Spring That Wasn’t” was published by Stanford University Press in 2013 and includes a detailed account of the Bahrain uprising. His new book “The Other Saudis: Shiism, Dissent and Sectarianism,” which outlines the history of political movements among the Shia of Saudi Arabia and their relationship with the Saudi state and will be published by Cambridge University Press in January 2015.