This article examines the outcomes of collective forms of engagement in the ASEAN region. By examining how convening power in these south-south engagements has worked since the Bandung Conference, the paper reviews how the mode of consensus building adopted in 1955 has been channelled into regional cooperation. In particular, the paper considers the implications of these forms of cooperation for the consensus building that characterizes ASEAN today. The paper uses the processes evident in the ASEAN Development Outlook to set out the consequences of these findings for how the UN system can set out more effective criteria for global South cooperation. This has direct implications for institutional mechanisms for advancing capacity and expertise in new forms of cooperation between the global North and global South.

This special issue discusses, in-depth, the embedded conundrum of South-South and triangular cooperation (SSTC) whose frontiers are shifted from collaboration to contention within the United Nations (UN) development system and beyond. This introductory article provides the conceptual framework—the contentioncollaboration spectrum—that guides all the contributors and serves as the collective starting point for this project. The moving frontiers of SSTC reflect the shifting historic relationships between the global South and North as well as Southern partner countries. The framework enables the six articles of this special issue to investigate the paradoxical structure of contrasting dynamics of SSTC, which has always been exposed to historical transformations at multi-levels of analysis: global governance, regional engagements, middle power perspectives, and the UN development system and beyond.