Introduction

This edited volume published by Springer brings together a selection of peer-reviewed chapters that were presented and discussed at the International Colloquium on “Actors in International Investment Law: Beyond Claimants, Respondents and Arbitrators”. The Colloquium took place at the University Paris II Panthéon-Assas on the 26th and 27th of September 2019 and was hosted by Catharine Titi. The call for papers of this colloquium noted the fact that traditional studies of actors in international investment law have tended to focus principally on arbitrators, claimant investors and respondent states, leaving a number of other seminal actors outside the main scope of this field of law, a view that was duly reaffirmed as the event unfolded.