Marieke Louis is Associate Professor of Political Science at Sciences Po Grenoble, PACTE, CNRS, France. Currently, she is also Deputy Director of the Centre Marc Bloch in Berlin, Germany. She recently published Why International Organizations Hate Politics: Depoliticizing the World (Routledge, Global Institutions Series, 2021), with Lucile Maertens.

Bob Reinalda is Fellow at the Political Science Department of Radboud University in Nijmegen, The Netherlands. He is the original editor of the handbook and has published International Secretariats: Two Centuries of International Civil Servants and Secretariats (Routledge, Global Institutions Series, 2020).