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COP (Conference of the Parties)

Updated May 21, 2026

The supreme decision-making body of an international convention, where parties to the treaty meet to assess implementation and adopt new decisions.

'Conference of the Parties' (COP) is generic treaty terminology for the supreme body bringing together all states party to a treaty. The COP is the decision-making body for the treaty, responsible for reviewing implementation, considering amendments, and making strategic decisions.

Climate COPs

The term is most associated with the UN Convention on Climate Change (UNFCCC) annual COP meetings:

  • COP28 (Dubai, 2023): the UAE including first explicit transition-from-fossil-fuels language.
  • COP29 (Baku, 2024): the New Collective Quantified Goal on .
  • COP30 (Belém, Brazil, 2025): ongoing implementation focus, second-round NDC submissions.
  • COP31 (host TBD, 2026): continued implementation and ambition increase.

Climate COPs have grown to become the largest annual environmental gatherings, attracting tens of thousands of delegates, NGOs, business representatives, and observers. The scale itself is institutionally significant — climate COPs are some of the largest multilateral diplomatic gatherings of any kind.

COPs for Other Treaties

COPs exist for many treaties beyond UNFCCC:

  • Convention on Biological Diversity (CBD COPs): producing major frameworks like the Kunming-Montreal Global Biodiversity Framework (2022).
  • Convention on International Trade in Endangered Species (CITES COPs): regulating international wildlife trade.
  • Basel Convention (hazardous waste): governing waste shipment.
  • Convention on Migratory Species (CMS COPs): protecting migratory wildlife.
  • Stockholm Convention on Persistent Organic Pollutants: regulating dangerous chemicals.
  • Minamata Convention on Mercury: regulating mercury pollution.
  • Vienna Convention/Montreal Protocol: governing ozone-depleting substances.
  • Ramsar Convention on Wetlands: wetland conservation.

Each has its own COP cycle, , and decision-making procedures.

Climate COP Structure

Each climate COP produces:

  • A 'cover decision' summarizing political commitments and providing top-level guidance.
  • Technical decisions adopted under both the UNFCCC and the (CMA — Conference of the Parties serving as the Meeting of the Parties to the Paris Agreement).
  • Side initiatives: voluntary coalitions and pledges announced alongside the formal decisions.
  • High-level statements by leaders, ministers, and other officials.
  • NGO and civil-society engagements: substantial parallel activity.

The distinction between the cover decision (politically headlined) and technical decisions (substantively operational) matters — the technical decisions often carry more long-term implementation significance than the cover decision's political language.

COP Presidency Cycles

COP presidencies rotate among regional groupings. The COP president (typically a senior minister of the host country) shapes the COP's agenda and outcomes substantially. Recent COP presidents and their priorities:

  • UK COP26 (2021): Alok Sharma focused on fossil-fuel language and Paris Agreement implementation.
  • Egypt COP27 (2022): Sameh Shoukry focused on establishment.
  • UAE COP28 (2023): Sultan Al Jaber focused on fossil-fuel transition and Global Stocktake.
  • Azerbaijan COP29 (2024): focused on climate finance (NCQG).
  • Brazil COP30 (2025): focused on implementation, NDC ambition, and tropical forest protection.

Why It Matters

COPs matter because they are the principal venues for treaty implementation decisions. The COP process determines whether a treaty operates effectively or stagnates. For climate, biodiversity, chemicals, and other major environmental treaties, the COP cycle is the central institutional mechanism.

COPs are also major political moments where state ambition is tested, civil-society is conducted, and business engagement is mobilized.

Critiques

COPs have faced critiques:

  • Slow progress: COP outcomes often fall short of what science requires.
  • Bureaucratization: the process can be procedurally heavy.
  • Greenwashing: corporate participation has been criticized as PR rather than substantive.
  • Travel emissions: the scale of COP meetings produces substantial carbon footprints.
  • presence: fossil-fuel lobbyists at climate COPs have been controversial.

Common Misconceptions

COPs are sometimes assumed to be UN bodies. They are technically treaty bodies (not UN organs), though they operate under UN auspices and use UN procedures.

Another misconception is that 'COP' refers only to climate. Many treaties have COPs; the term is generic treaty terminology.

Real-World Examples

The 2015 Paris COP21 produced the Paris Agreement — the most consequential climate COP in history. The 2022 CBD COP15 produced the Kunming-Montreal Global Biodiversity Framework. The 2024 climate COP29 in Baku produced the NCQG decision that was widely criticized but politically significant.

Example

COP28 in Dubai (November-December 2023) produced the first Global Stocktake decision, including the historic commitment to 'transition away from fossil fuels' — though many delegations criticized the language as insufficient.

Frequently asked questions

No — COPs exist for many treaties (CBD, CITES, Basel, etc.). The unqualified term 'COP' is colloquially associated with UNFCCC climate COPs due to their prominence.
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