Prof. Dr. Jeroen Temperman is Professor of Public International Law at the Department of International Law of Erasmus University Rotterdam. His research is focused on freedom of religion or belief, freedom of expression and extreme speech (particularly religious hate speech), religion-state relationships, and issues of discrimination on religious grounds. Previously, he worked as assistant professor of public international law at the University of Amsterdam; he has been a research fellow at the Irish Centre for Human Rights (National University of Ireland, Galway); and prior to that, he worked as a trainee with the human rights department of the Foreign and Commonwealth Office, London, UK, on issues of religious freedom. He was awarded a EUR-fellowship in 2010 for his project: “The prohibition of advocacy of religious hatred in international and domestic law” and was a Fulbright Scholar, visiting at Washington College of Law, American University, Washington, D.C. in 2014-15. He is Editor-in-Chief of Religion and Human Rights, an international law journal. Cambridge University Press is publishing his book on the prohibition of advocacy of religious hatred in domestic and international law.