Sumukan Ltd v Commonwealth Secretariat : Can Administrative Law Affect Jurisdictional Competence of an Arbitral Tribunal? - Arbitration: The International Journal of Arbitration, Mediation and Dispute Management View Sumukan Ltd v Commonwealth Secretariat : Can Administrative Law Affect Jurisdictional Competence of an Arbitral Tribunal? by - Arbitration: The International Journal of Arbitration, Mediation and Dispute Management Sumukan Ltd v Commonwealth Secretariat : Can Administrative Law Affect Jurisdictional Competence of an Arbitral Tribunal? 74 2 Arbitration: The International Journal of Arbitration, Mediation and Dispute Management