The next battleground involves the admissibility of sovereign bond claims in investment treaty arbitration, which emerges as a complicated issue particularly when a large group of bondholders bring a case as a bundle against the debtor sovereign. To attain an appropriate balance between bondholder protection and respect for orderly debt restructuring, this study has conceptualised investment arbitration proceedings as a supplemental leverage available for bondholders as a group by which a stay of arbitral proceedings is imposed and lifted amid the fair progress of sovereign debt restructuring processes.