Toby Matthiesen is a research fellow in Islamic and Middle Eastern Studies at Pembroke College, University of Cambridge. He is the author of Sectarian Gulf: Bahrain, Saudi Arabia, and the Arab Spring That Wasn’t (Stanford University Press, 2013). POMEPS hosted Matthiesen in 2013 to discuss Sectarian Gulf in POMEPS Conversations 28. He discusses his recent release The Other Saudis: Shiism, Dissent and Sectarianism (Cambridge University Press, 2014). Kristin Smith Diwan offers comments. Diwan is a professorial lecturer at American University and a visiting scholar at the George Washington University’s Institute for Middle East Studies.