He specializes in comparative constitutional law, constitutional theory, legisprudence, and public international law. Roznai holds a PhD and LLM from the London School of Economics, and LLB and BA degrees in law and government from the IDC. He is also an elected board member and secretary general of the Israeli Association of Public Law. He has been a Post-Doctoral Fellow at the Minerva Center for the Rule of Law under Extreme Conditions, University of Haifa, and at the Hauser Global Law School, New York University, and a visiting researcher at the Program in Law and Public Affairs, Princeton University. This book is based upon his PhD for which he was awarded the 2014 Thesis Prize of the European Group of Public Law.