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The compendium details the legal arguments presented from December 2 to December 13, 2024, at the ICJ. It highlights a fundamental divide between climate-vulnerable nations and several high-emitting States. Vulnerable nations, including many Small Island Developing States (SIDS), argue for a 'harmonious interpretation' of international law, asserting that obligations to prevent transboundary harm and protect human rights exist independently of and complement the Paris Agreement. They demand accountability for historical emissions and full reparations, including debt cancellation. Conversely, a minority of high-emitting States, such as the United States, Russia, and Saudi Arabia, argue that the UN climate treaty regime (UNFCCC, Kyoto Protocol, and Paris Agreement) is the exclusive source of State obligations, seeking to limit liability and reject the applicability of customary international law or human rights law to climate mitigation.