Soliev et al., 2015). Angola, for example, outlines regional adaptation as a priority and one of its unconditional adaptation strategies  is enhancing resilience in the Benguela fisheries system, a project shared with Namibia and South Africa . Another example is The Great Green Wall for the Sahara and Sahel Initiative, which was launched in 2007 with the aim of tackling land degradation in Africa . This transboundary project, led by the African Union Commission, is being implemented in more than 20 countries across Africa's Sahel region, in cooperation with international partners including UNCCD, GEF and the World Bank. Approximately USD 10 billion have been mobilised and/or promised for this initiative . Such statements demonstrate the increasing identification of transboundary risks and approaches to manage and adapt to them as areas of 'common concern' that require cooperative adaptation actions. Accelerating strengthened transboundary water and climate governance needs to integrate these climate drivers of compromised water security. The role of institutions such as OMVS and the NBI have demonstrated they can influence economic behaviour among riparian countries of shared river basins highlighting that institutions are an integral part of climate governance in evolving economic systems .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report