Third Party Intervention

In its Climate Change Advisory Opinion, the International Court of Justice held that certain climate-related obligations of States under customary international law and climate change treaties are erga omnes (partes). One important consequence – as the Court explicitly confirmed – is that States can invoke each other’s responsibility for breaching those climate obligations. As Paddeu and…

I. Introduction Certain aspects and the (then still potential) outcome of the ICJ Case concerning Application of the Convention on the Prevention and Punishment of the Crime of Genocide in Sudan (Sudan v. United Arab Emirates) were already discussed on this blog here and here, including the issue of…

On 5 March 2025, Sudan instituted proceedings against the United Arab Emirates (UAE) before the International Court of Justice (ICJ) regarding alleged violations by the UAE of its obligations under the Convention on the Prevention and Punishment of Genocide (the Genocide Convention). The case concerns allegations that the UAE is supporting Sudan’s paramilitary Rapid Support Forces against…

On 6 August 2024, the International Court of Justice issued a press release relating to the pending Ukraine v. Russia case titled “Declarations of intervention under Article 63 of the Statute of the Court for the purposes of the merits stage of the proceedings”. The Court announced that, of the 32 states which had previously…