Advisory Opinion

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A Reckoning in the Emperor’s Court: Jamaica’s Reparations Petition to the Privy Council

On 7 September 2026, Jamaica, which remains a Commonwealth Country with King Charles III as its head of state, will formally present a petition to the King with three questions about the legality of transatlantic chattel slavery and the UK’s responsibility to make reparations. Jamaica's petition is part of a decade-long coordinated campaign of Caribbean (CARICOM) countries to seek reparations for slavery. It comes amidst increasing momentum for a wider international movement seeking to establish transatlantic chattel slavery as a wrong for which redress is owed as a matter of international law. Jamaica's Prime Minister has called the move a "watershed moment for CARICOM and the broader global movement for reparatory justice."…

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Apportioning Historical Responsibility After the ICJ’s Climate Advisory Opinion: From Principle to Practice

When the International Court of Justice (ICJ) delivered its Advisory Opinion on Obligations of States in Respect of Climate Change on 23 July 2025, commentators rightly called it a watershed for international environmental law. The Court unanimously confirmed that the customary rules of State responsibility, as reflected in many respects in the ILC’s Articles on State Responsibility…

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International Courts Against the Defunding of Climate Science? Revisiting the ICJ’s Climate Change Advisory Opinion

Introduction The first eighteen months of the second Trump administration have witnessed a sustained assault on scientific infrastructures enabling understanding of anthropogenic climate change. This has taken the form of cuts to national science agencies; freezes and dramatic reductions in grants to universities; and attempts to…

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A Framework for the Weight of Treaty Body Output: The ICJ’s Right to Strike Advisory Opinion

On 21 May 2026, the International Court of Justice delivered its advisory opinion on the right to strike under ILO Convention No. 87, holding by ten votes to four that the right is protected by that instrument. The Opinion clarifies a long-running issue between workers’ and employers’ groups. But it is also significant as a methodological…

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When Advice Should Have Turned Binding: A Missed Opportunity

On 21 May 2026, the International Court of Justice gave its advisory opinion on the Right to Strike under ILO Convention No. 87. By ten votes to four, the Court concluded that the right to strike of workers and their organisations is protected under ILO Convention No. 87 – one of the ILO’s eight “fundamental” Conventions.  …

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