Speakers

H.E. Mr. Sumbue Antas will provide a keynote speach followed by reflections from Hon. Mr. Justice David Unterhalter, Gabrielle Marceau, Nicolas Lockhart, and Elena Cima. Dominic Coppens will moderate the session.

Sumbue Antas

Ambassador, Permanent Representative of Vanuatu to the United Nations Office and Other International Organizations in Geneva 

David Unterhalter

Judge of the Supreme Court of Appeal of South Africa; Professor of Law, University of Cape Town

Gabrielle Marceau

Honorary Professor of International Public Law and International Organization Law, University of Geneva

Nicolas Lockhart

Partner, Sidley Austin

Elena Cima

Senior Lecturer, International Environmental Law, University of Geneva 

Dominic Coppens

Professor of International Economic Law, Maastricht University

About this session

This lunchtime conversation will explore the recent International Court of Justice advisory opinion on states’ obligations to tackle climate change and identify some of the key implications for trade cooperation.

TCSD 2026 Programme

TCSD features public panels complemented by thematic brainstorming and interactive sessions to deepen dialogue and generate practical ideas for concrete outcomes, collaboration, and ways forward.

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