Enrique Barón Crespo
Member of the Spanish Congreso de los Diputados (1977-87), Constitutional Father Former President of the European Parliament (1989-1992) and member of it (1986-2008) President of UEF Spain

Jo Leinen
Honorary President of the UEF and the European Movement International, Member of the European Parliament (1999-2019)

Michel Dévoluy
Professor emeritus in economics, holder of the chair Jean Monnet at the University of Strasbourg

Gary K. Shepherd
Editor of the review United World

Fernando Iglesias
President of the World Federalist Movement, Director of the Spinelli Chair in Buenos Aires, member of the Argentinian Parliament and of the Friendship Group with Italy in the Chamber of Deputies

Yasmina Gourchane
Membership and Outreach Associate at the Coalition for the ICC, New York

Daniele Archibugi
Director, Institute for Research on Population and Social Policy of the Italian National Research Council and Professor of Governance, Innovation and Public Policy, Birkbeck College, University of London

Giulio Saputo
Chief Editor of the online journal Eurobull