41. Climate, Peace and Security in the UN Security Council
- Author:
- Helene Maria Kyed and Justine Chambers
- Publication Date:
- 01-2026
- Content Type:
- Policy Brief
- Institution:
- Danish Institute for International Studies (DIIS)
- Abstract:
- Climate, peace and security (CPS) is a recurring topic of debate within the UN Security Council (UNSC) that, despite never achieving a formal thematic mandate, has advanced with the support of a majority of council members since 2011 and is now reflected in 11 missions. CPS engagement in the UNSC rests on an understanding that the impacts of climate change deepen vulnerabilities that can aggravate existing threats to international peace and security, placing the issue within the UNSC’s charter-given mandate. CPS-supportive council members also acknowledge that climate impacts challenge UN peacekeeping operations and that addressing climate change is important to both peacebuilding efforts and the conflict prevention mandate of the UNSC. The existential threat that sea-level rise poses to low-lying coastal states is another recurring topic. As an elected member of the UNSC (2025-2026), Denmark has positioned itself as a champion of CPS, aligned with one of its three thematic priorities. In 2025, Denmark co-chaired with Sierra Leone the Joint Pledges on CPS – an initiative launched in 2023 to put a spotlight on CPS in the UNSC’s thematic and geographic meetings, resolutions, mission mandates and analyses. Denmark also stressed climate-related risks in the context of Yemen during its March 2025 presidency and later played a role in retaining CPS-language in the mandate renewal of the UN mission in South Sudan. It has collaborated on events, linking CPS to the protection of civilians, peace operations and the ‘Women, Peace and Security’ agenda. These efforts unfold in a challenging political environment, marked by funding cuts to UN missions and a renewed focus on rearmament and hard-security priorities that risk underprioritizing climate change. While Russia and China have consistently opposed placing climate-related issues under the UNSC’s remit, the US’s recent withdrawal from CPS-supporting groups in the Council and its exit from the Paris Agreement have heightened the risk of eroding progress on CPS.
- Topic:
- Security, Climate Change, Geopolitics, Peace, and UN Security Council
- Political Geography:
- Global Focus and United States of America