Cornelia Navari, formerly Associate Professor at the University of Birmingham, UK, is Visiting Professor at the University of Buckingham, UK. She has edited International Society: The English School for the EISA Pivot Series (2021), International Organization in the Anarchical Society (2019), and Power Transition in the Anarchical Society (2022) with Tonny Brems Knudson. She edited Progressivism and American Foreign Policy between the World Wars with Molly Cochran (2017). Her latest monograph is The International Society Tradition (2021).

Yannis A. Stivachtis is Professor of Political Science at Virginia Tech. His publications include The Enlargement of International Society (1998), World Society in English School Theory (2018, editor), Interrogating Regional International Societies, Questioning the Global International Society (2015, editor), EUrope and the World (2012, editor), Regional International Society in a Post-Enlargement Europe (2011, co-editor), International Order in a Globalizing World (2007, editor), and Understanding European Union's Mediterranean Enlargement: The English School and the Expansion of Regional International Societies (2002, co-editor).