Freya Baetens is Professor of Public International Law at the PluriCourts Centre, Faculty of Law, Universitetet i Oslo, working on an interdisciplinary research project evaluating the legitimacy of international courts and tribunals. She is also affiliated with the Europa Institute, Faculty of Law, Universiteit Leiden. As a Member of the Brussels Bar, she regularly acts as counsel or expert in international and European disputes. She is specialised in the Law of Treaties, responsibility of states and international organisations, Law of the Sea, WTO and investment, energy and sustainable development law.

'Professor Baetens has brought a fascinating new perspective to the study of international law, looking at the role of unseen actors in various areas. While unseen, these actors are certainly not unimportant for the effective functioning of their respective institutions, and the discharge of their duties benefits parties, States and the rule of law. This volume demonstrates how the many unseen actors contribute to making international adjudication efficient and effective, and is a fresh approach to the study of international adjudication.' Meg Kinnear, Secretary-General, International Centre for Settlement of Investment Disputes

• 1. Unseen actors in international courts and tribunals: challenging the legitimacy of international adjudication Freya Baetens; Part I. Institutional Perspectives: 2. The International Court of Justice Nathalie Wiles; 3. The International Tribunal for the Law of the Sea Philippe Gautier; 4. International arbitral institutions Bridie Mcasey; 5. The World Trade Organization Daniel Baker and Gabrielle Marceau; 6. The International Criminal Court Philipp Ambach; 7. The European Court of Human Rights Peter Kempees and Ledi Bianku; 8. The Court of Justice of the European Union Caroline Heeren; Part II. Nomination and Appointment: 9. Gatekeeper secretariats Kathleen Claussen; 10. Appointing authorities: self-appointment, party appointment and non-appointment Peter Tzeng; 11. Before the law: assessing the process and impact of judicial screening bodies Brian Mcgarry and Josef Ostřanský; Part III. Case Management and Deference to the Bench: 12. The essence of adjudication: legitimacy of case managers in international arbitration Christine Sim; 13. Procedural reforms at the Court of Arbitration of the International Chamber of Commerce: how to ensure that party autonomy will continue serving as a legitimization tool? Giacomo Marchisio; 14. Will an investment court be a better fact-finder? The case of expert evidence Matthew W. Swinehart; 15. Unseen and unsung: language services at the International Criminal Court and their impact on institutional legitimacy Leigh Swigart; 16. Rights and expertise: assessing the managerial approach of the Court of Justice of the European Union to conflict adjudication Marie-Catherine Petersmann; Part IV. Confidentiality and Transparency: 17. The politics of invisibility: why are international legal bureaucrats obscured from view? Tommaso Soave; 18. Unseen actors as unseen experts: ghosts in international adjudication Guillaume Yvan Jean Gros; 19. Arbitral institutions' response to perceived legitimacy deficits: promoting diversity, transparency and expedition in investor-state arbitration Ksenia Polonskaya; 20. Identifying the voices of unseen actors in investor-state dispute settlement Damien Charlotin; Part V. Ethics and Accountability: 21. Physicians' impact on the legitimacy of the International Criminal Court Giovanna Maria Frisso; 22. Screening powers in investment arbitration: questions of legal change and legitimacy Relja Radović; 23. Legitimacy and the role of legal officers in chambers at international and hybrid criminal courts and tribunals Marko Divac Öberg; 24. The référendaire as an unseen actor: a comparative look at the Court of Justice of the EU, the US Supreme Court and international arbitral tribunals Gillian Cahill; Part VI. External Influences and Activities: 25. 'Outside activities' and workload management: as unseen actors (and factors) in international adjudication Catherine H. Gibson; 26. The legitimacy of private lawyers representing states before international tribunals Andreas R. Ziegler and Kabre R. Jonathan; 27. Online reporters and databases: four narratives of their roles in investor-state dispute settlement Pietro Ortolani; 28. Bilateral committees in EU trade and investment agreements: platforms for the reassertion of state control over investor-state adjudication? Hannes Lenk.

Freya Baetens is Professor of Public International Law at the PluriCourts Centre, Faculty of Law, Universitetet i Oslo, working on an interdisciplinary research project evaluating the legitimacy of international courts and tribunals. She is also affiliated with the Europa Institute, Faculty of Law, Universiteit Leiden. As a Member of the Brussels Bar, she regularly acts as counsel or expert in international and European disputes. She is specialised in the Law of Treaties, responsibility of states and international organisations, Law of the Sea, WTO and investment, energy and sustainable development law.

'Professor Baetens has brought a fascinating new perspective to the study of international law, looking at the role of unseen actors in various areas. While unseen, these actors are certainly not unimportant for the effective functioning of their respective institutions, and the discharge of their duties benefits parties, States and the rule of law. This volume demonstrates how the many unseen actors contribute to making international adjudication efficient and effective, and is a fresh approach to the study of international adjudication.' Meg Kinnear, Secretary-General, International Centre for Settlement of Investment Disputes

• 1. Unseen actors in international courts and tribunals: challenging the legitimacy of international adjudication Freya Baetens; Part I. Institutional Perspectives: 2. The International Court of Justice Nathalie Wiles; 3. The International Tribunal for the Law of the Sea Philippe Gautier; 4. International arbitral institutions Bridie Mcasey; 5. The World Trade Organization Daniel Baker and Gabrielle Marceau; 6. The International Criminal Court Philipp Ambach; 7. The European Court of Human Rights Peter Kempees and Ledi Bianku; 8. The Court of Justice of the European Union Caroline Heeren; Part II. Nomination and Appointment: 9. Gatekeeper secretariats Kathleen Claussen; 10. Appointing authorities: self-appointment, party appointment and non-appointment Peter Tzeng; 11. Before the law: assessing the process and impact of judicial screening bodies Brian Mcgarry and Josef Ostřanský; Part III. Case Management and Deference to the Bench: 12. The essence of adjudication: legitimacy of case managers in international arbitration Christine Sim; 13. Procedural reforms at the Court of Arbitration of the International Chamber of Commerce: how to ensure that party autonomy will continue serving as a legitimization tool? Giacomo Marchisio; 14. Will an investment court be a better fact-finder? The case of expert evidence Matthew W. Swinehart; 15. Unseen and unsung: language services at the International Criminal Court and their impact on institutional legitimacy Leigh Swigart; 16. Rights and expertise: assessing the managerial approach of the Court of Justice of the European Union to conflict adjudication Marie-Catherine Petersmann; Part IV. Confidentiality and Transparency: 17. The politics of invisibility: why are international legal bureaucrats obscured from view? Tommaso Soave; 18. Unseen actors as unseen experts: ghosts in international adjudication Guillaume Yvan Jean Gros; 19. Arbitral institutions' response to perceived legitimacy deficits: promoting diversity, transparency and expedition in investor-state arbitration Ksenia Polonskaya; 20. Identifying the voices of unseen actors in investor-state dispute settlement Damien Charlotin; Part V. Ethics and Accountability: 21. Physicians' impact on the legitimacy of the International Criminal Court Giovanna Maria Frisso; 22. Screening powers in investment arbitration: questions of legal change and legitimacy Relja Radović; 23. Legitimacy and the role of legal officers in chambers at international and hybrid criminal courts and tribunals Marko Divac Öberg; 24. The référendaire as an unseen actor: a comparative look at the Court of Justice of the EU, the US Supreme Court and international arbitral tribunals Gillian Cahill; Part VI. External Influences and Activities: 25. 'Outside activities' and workload management: as unseen actors (and factors) in international adjudication Catherine H. Gibson; 26. The legitimacy of private lawyers representing states before international tribunals Andreas R. Ziegler and Kabre R. Jonathan; 27. Online reporters and databases: four narratives of their roles in investor-state dispute settlement Pietro Ortolani; 28. Bilateral committees in EU trade and investment agreements: platforms for the reassertion of state control over investor-state adjudication? Hannes Lenk.

Freya Baetens is Professor of Public International Law at the PluriCourts Centre, Faculty of Law, Universitetet i Oslo, working on an interdisciplinary research project evaluating the legitimacy of international courts and tribunals. She is also affiliated with the Europa Institute, Faculty of Law, Universiteit Leiden. As a Member of the Brussels Bar, she regularly acts as counsel or expert in international and European disputes. She is specialised in the Law of Treaties, responsibility of states and international organisations, Law of the Sea, WTO and investment, energy and sustainable development law.

'Professor Baetens has brought a fascinating new perspective to the study of international law, looking at the role of unseen actors in various areas. While unseen, these actors are certainly not unimportant for the effective functioning of their respective institutions, and the discharge of their duties benefits parties, States and the rule of law. This volume demonstrates how the many unseen actors contribute to making international adjudication efficient and effective, and is a fresh approach to the study of international adjudication.' Meg Kinnear, Secretary-General, International Centre for Settlement of Investment Disputes

• 1. Unseen actors in international courts and tribunals: challenging the legitimacy of international adjudication Freya Baetens; Part I. Institutional Perspectives: 2. The International Court of Justice Nathalie Wiles; 3. The International Tribunal for the Law of the Sea Philippe Gautier; 4. International arbitral institutions Bridie Mcasey; 5. The World Trade Organization Daniel Baker and Gabrielle Marceau; 6. The International Criminal Court Philipp Ambach; 7. The European Court of Human Rights Peter Kempees and Ledi Bianku; 8. The Court of Justice of the European Union Caroline Heeren; Part II. Nomination and Appointment: 9. Gatekeeper secretariats Kathleen Claussen; 10. Appointing authorities: self-appointment, party appointment and non-appointment Peter Tzeng; 11. Before the law: assessing the process and impact of judicial screening bodies Brian Mcgarry and Josef Ostřanský; Part III. Case Management and Deference to the Bench: 12. The essence of adjudication: legitimacy of case managers in international arbitration Christine Sim; 13. Procedural reforms at the Court of Arbitration of the International Chamber of Commerce: how to ensure that party autonomy will continue serving as a legitimization tool? Giacomo Marchisio; 14. Will an investment court be a better fact-finder? The case of expert evidence Matthew W. Swinehart; 15. Unseen and unsung: language services at the International Criminal Court and their impact on institutional legitimacy Leigh Swigart; 16. Rights and expertise: assessing the managerial approach of the Court of Justice of the European Union to conflict adjudication Marie-Catherine Petersmann; Part IV. Confidentiality and Transparency: 17. The politics of invisibility: why are international legal bureaucrats obscured from view? Tommaso Soave; 18. Unseen actors as unseen experts: ghosts in international adjudication Guillaume Yvan Jean Gros; 19. Arbitral institutions' response to perceived legitimacy deficits: promoting diversity, transparency and expedition in investor-state arbitration Ksenia Polonskaya; 20. Identifying the voices of unseen actors in investor-state dispute settlement Damien Charlotin; Part V. Ethics and Accountability: 21. Physicians' impact on the legitimacy of the International Criminal Court Giovanna Maria Frisso; 22. Screening powers in investment arbitration: questions of legal change and legitimacy Relja Radović; 23. Legitimacy and the role of legal officers in chambers at international and hybrid criminal courts and tribunals Marko Divac Öberg; 24. The référendaire as an unseen actor: a comparative look at the Court of Justice of the EU, the US Supreme Court and international arbitral tribunals Gillian Cahill; Part VI. External Influences and Activities: 25. 'Outside activities' and workload management: as unseen actors (and factors) in international adjudication Catherine H. Gibson; 26. The legitimacy of private lawyers representing states before international tribunals Andreas R. Ziegler and Kabre R. Jonathan; 27. Online reporters and databases: four narratives of their roles in investor-state dispute settlement Pietro Ortolani; 28. Bilateral committees in EU trade and investment agreements: platforms for the reassertion of state control over investor-state adjudication? Hannes Lenk.