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This policy brief, produced by CIEL and IUCN, examines the compatibility of a proposed international treaty to end plastic pollution with World Trade Organization (WTO) rules. It highlights how the international trade of plastic feedstocks, polymers, and waste accelerates the plastic crisis and serves as a mechanism for spreading micro- and nanoplastic pollution.

This research paper, published in November 1999 by WWF-World Wide Fund for Nature and authored by experts from the Center for International Environmental Law (CIEL), examines the conflict between World Trade Organization (WTO) rules and trade measures used in Multilateral Environmental Agreements (MEAs). The authors argue that uncertainty regarding WTO consistency is used by some nations to 'chill' the development of effective environmental laws, specifically citing the Biosafety Protocol and the POPs Agreement. The paper recommends that WTO members adopt a political statement of consistency and negotiate a separate agreement to grant MEAs equal status with WTO rules.