A Critical Examination of International Law Perspectives on the Legal Dimensions of Trans-Boundary Environmental Impacts

Abstract

This study critically examined the international legal dimensions of trans-boundary environmental pollution, with particular attention to Nigeria’s experience within the West African subregion. The article aimed to explored how pollutants originating from one state caused ecological, social, and economic harm across borders, thereby challenging the traditional notion of territorial sovereignty. Using a doctrinal research methodology, the study analyses treaties, judicial precedents, and regional conventions such as the Abidjan Convention and the Convention on Long-Range Trans-Boundary Air Pollution to assess existing legal responses. Findings reveal that while international law, through principles like the no-harm rule and state responsibility, provides a framework for prevention and cooperation, implementation remains weak due to poor institutional capacity, fragmented laws, and geopolitical interests. The study identified key challenges including inadequate monitoring, weak enforcement, and lack of corporate accountability. The work highlighted emerging global trends such as environmental human rights, climate-integrated governance, and digital monitoring as future pathways for reform. The study concluded that effective trans-boundary environmental governance requires stronger regional cooperation, legal harmonisation, technological innovation, and the institutionalisation of participatory environmental diplomacy to ensure ecological justice and sustainable development in Nigeria and beyond.

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