Southmayd Professor of Law, Professor of Philosophy Yale university

Senior Research Fellow, All Souls College, Oxford

The University of Haifa

Professor of International Relations, Durham University

University of Massachusetts, Amherst

Defence Studies, King's College London, Joint Services Command and Staff College

London School of Economics and Political Science (LSE)

Assistant Professor, Philosophy Section, Twente University

Lecturer (retired) University of Reading

Nederlandse Defensie Academie