Third Party Participation in Investment‐Environment Disputes: Recent Developments

Abstract

This article outlines recent developments in investor–State dispute settlement related to the participation of third parties in arbitration. A particular focus is given to third party participation in disputes with a clear public interest based on the relevance of the cases to the protection of the environment, or sustainable development more generally. The benefits and drawbacks of third party participation and the relationship of participation to broader issues of transparency are also briefly discussed.