A global call for evidence on triangular co-operation is now open, inviting partners across governments, the United Nations system, development institutions and practitioners to share results, data and experiences. Led by the United Nations Office for South-South Cooperation (UNOSSC), the OECD and Portugal, through the Camões Institute, the initiative aims to make 2026 a year of stronger visibility, accessible evidence and more diverse voices on triangular co-operation.
Triangular co-operation delivers practical, demand-driven solutions through partnerships that bring together diverse actors and expertise. Yet too often, as highlighted in the Global Perspectives on Triangular Co-operation 2025 and discussions at the 9th International Meeting on Triangular Co-operation, results, lessons and experiences remain scattered, under-documented or insufficiently visible. This call seeks to change that.
We invite you to share:
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- Stories of results and impact from your triangular co-operation initiatives
- Documents containing evidence on triangular co-operation (e.g. evaluations, project briefs, etc.), or
- Datasets of triangular co-operation projects, in any format.



