Arbitration analysis: The Supreme Court of India confirmed that transnational issue estoppel limits challenges to the enforcement of foreign arbitral awards under Section 48 of the Arbitration and Conciliation Act 1996 (Arbitration Act). Where issues have been fully argued and determined by the seat court, they cannot be re-litigated before Indian enforcement courts under the guise of public policy objections. The court emphasised the narrow scope of Section 48 of the Arbitration Act, rejecting attempts at merits review and reinforcing finality in arbitral proceedings. However, it preserved a limited exception for objections genuinely engaging Indian public policy. The decision strengthens India’s pro-enforcement stance, curbs duplicative litigation across jurisdictions, and underscores the need for award-debtors to exhaust all challenges at the seat. Produced in partnership with Juhi Gupta, counsel and Sanjana Kattoor, associate, of Shardul Amarchand Mangaldas & Co.