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This briefing by the Center for International Environmental Law (CIEL) analyzes historical negotiation timelines of multilateral environmental agreements (MEAs) to provide pathways for the development of a future international legally binding instrument on plastic pollution. It argues that the current ambition to complete the plastics treaty by the end of 2024 is tight and suggests that previous treaties, such as the Rotterdam, Minamata, and BBNJ agreements, demonstrate that negotiations can legally and practically extend beyond initial deadlines without requiring new mandates from governing bodies.